Sat Apr 29 08:48:06 1994  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* Changed to release under GNU Public Library license.   There
	have been a number of other fixes including fixes to bignums.
	

Thu Jan 20 10:38:00 1994  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* version 624 made.
	* contains just changes so that compiles on solaris 5.2.   The 
	623 version compiled on solaris 5.3, but the earlier 5.2 version of solaris
	had some differences which needed patches.   These are contained
	in 624.

Fri Dec 10 15:02:14 1993  Bill Schelter  (wfs at nicolas.ma.utexas.edu)
        * version 623 made.
	
	* the check on string-trim  for a list of chars is fixed.
	Much earlier the (string-trim '(2) "ab") would run forever.
	Then string-trim was broken.


Sun Dec  5 15:34:44 1993  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* add solaris version: changes to several C files
	and new version of sfasl for elf.
	* linux port added.

Thu Oct 29 13:20:17 1992  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* make sure the signal stack is 8 byte aligned.   Needed on sun os 4.1.2
	and higher.

Thu Jun  4 06:18:20 1992  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* fix allocation of copy space during an sgc for relocatable

Wed Apr 29 09:02:59 1992  Bill Schelter  (wfs at nicolas.ma.utexas.edu)
        *cmpnew/lfuns.lsp make load,open, error-set go through lisp
	symbol, so users can redefine them (eg when loaded common lisp
	condition code stuff).
    	* defstruct.lsp: put the conc-name in the current package,
	so that programs can discover the package in effect when
	the defstruct was done, in order to reconstruct accessors.

Sun Apr 26 23:28:42 1992  Bill Schelter  (wfs@sonia.ma.utexas.edu)

	* predicate.c: contains_sharp_comma handle non type t arrays
	* co1typep optimize for the '(satifies fun) type.
	* cmpinline.lsp, cmplabel.lsp, cmploc.lsp
	inline-integer  (set-loc unwind-exit get-inline-loc)
	fixes by r harris.

Thu Apr 23 15:09:44 1992  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* cmpenv.lsp  fix function return integer proclamation.

Sat Apr 11 09:25:05 1992  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* numlib.lsp: changes to ensure double accuracy not lost.

Thu Apr  9 11:21:25 1992  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* log,exp,.. get more accuracy if given a fixnum[don't use short-float]
	* cmptop.lsp empty keyword list bug (defun foo(&key) nil)
	* many files add hooks for dos port.

Fri Mar 27 15:59:24 1992  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* (cmpinline.lsp) inline-args of a closure var which changed later,
	signalled a compiler error.

Wed Mar 25 14:38:41 1992  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* (read.d) make read listen to when ':' is a read macro. in read_object
	* (cmpfun.lsp,cmpopt.lsp): Fix optimizer for (typep x 'ratio)
	* (predicate.c): fix equalp so (equalp (format nil "hi") "hi") -->t

Wed Mar 11 14:16:59 1992  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* (read.d): fix failure of (read-string "#b1"). Handle eof in 
	read_constituent 


Wed Feb 26 21:38:04 1992  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* cmpfun.lsp change read-char optimizer so as to avoid
	a C compiler bug on dec3100, which causes an unaligned access
	on that machine in calls to read-char.  

Wed Jan 29 08:30:09 1992  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* hp800.{h,defs} changes to run incrementally loaded text in a
	separate segment (at 4zillion).  Without this hp will only let
	you run one image at a time.   Unfortunately there will be a slight
	degradation in indirect calls (which includes all calls between
	user functions).    Why do they need to have segments....

Thu Jan 23 17:01:37 1992  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* add some save and retore around the terminal interrupt, to
	prevent some possible lossage when continuing from an interrupt.
	You still may lose if there is a gc during an interrupt.
	 

Wed Jan 22 19:08:11 1992  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* support for mac under AUX.   Files mac2.h, mac2.defs [by weigert]
	* misc small changes to other files for mac.

Sun Jan  5 21:35:21 1992  Bill Schelter  (wfs at nicolas.ma.utexas.edu)
    
	* new definitions for fplus and fminus in cmac.c   The ones for
	the 68020 were incorrect (since the changeover of the bignum code).
	These were only used by maxima.

Fri Nov 22 08:39:42 1991  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* Change proclaim of function so to turn integer
	proclained args into type T.   It is not possible to
	pass raw integer type since this would cause a problem
	with gc.    Also currently it would have generated C which
	broke the C compilation.    

Tue Oct 29 07:59:02 1991  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* add misc/warn-slow.lsp.   If this file is loaded, then the compiler
	warns of certain slow constructs, like undeclared arithmetic,
	and slow array references.

Thu Oct 24 21:34:55 1991  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* funlink.c to handle misproclaimed functions better.
	* big.c correct one source of "bad length" warning

Sun Oct 20 12:55:35 1991  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* gbc.c change position of where the C stack is marked from.
	This is relevant for sparcs with the register windows, which
	are dumped at interrupts.
	* cfun,gbc changes as per PCL mods for turbo closures.
	* read.d use 1000000000.0 rather than 1/ this , since it gives
	more accurate value in read of float.
	* cmpfun.lsp add hook for (typep x 'foo) so that can expand
	this differently according to a property of 'foo.
	* cmpcall.lsp, add a  hook so that special code can be emitted
	for calls where a super_funcall_no_event would have been emitted.
	This code might be used where we expect closures (cf PCL)
	
	

Wed Oct  9 21:31:03 1991  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* read.d to make 0.7 and (/ 7.0 10) produce identical results.
	when read (at least on 68k,sparc, rios).
	We have left the default number of digits printed out as 17,
	in spite of the fact that IEE has only 15.95 significant digits.
	The reason is that correct rounding to 15 or 16  digits, will
	commonly cause things like most-positive-long-float to print
	in a form which is not even readable (since it is rounded up above
	the most-positive-long-float).

Mon Oct  7 20:54:35 1991  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* fix LD_COMMAND typo in hp800.h
	* fix replace_array to make the new array not live
	beyond the call, so that gc won't accidentally mark two
	copy two identical array bodies (so maybe overstepping the
	the new relblock)

Fri Oct  4 10:58:59 1991  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* close to work on already closed streams.
	* make_pure_array arg fixed (num_log.c)
	* estack_buf put in static area on machines like rios.
	

Sun Sep 29 12:43:54 1991  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* fix to relblock allocation in sgc_start
	* fix for paths with "~/"
	* change default pagesize on sun3 to 4k
	

Sat Sep  7 13:51:24 1991  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* fix bit-array-op to make correct call to si::make-array-pure
	(num_log.c)

Mon Aug  5 18:06:35 1991  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* wt-cvars add declaration for VXXalloc variables

Tue Jul 30 16:48:09 1991  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* interpreted mapcar not gc protecting when given more than 2 args.

Sat Jul 27 12:32:35 1991  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* changes to subtypep to make (subtypep 'cons '(and t cons))
	 and (subtypep 'simple-array '(not vector)) correct.

Fri Jul 26 09:25:56 1991  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* change equal and hash_equal not to descend into structures.
	A ruling in CLTL2, clarifies that this should be the case.
	* alter get-setf-method and friends to accept environment as second
	argument.   Alter all the complex setf methods to pass the environment
	so that local functional and macro bindings can alter the behaviour
	of the setf macro.

Tue Jul 23 06:25:39 1991  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* sharing for fasd files for package operations was disabled.
	Otherwise the symbol in a shadow would be shared with the symbol's
	later occurrence in the file--It is still a good idea to put
	package operations in a separate lisp  file at the beginning of
	system load.
	* adjustable arrays brought into conformance with changes in CLTL
	II.  You  
	may now adjust non adjustable arrays, and the fill-pointer argument
	to adjust-array does not change the property of having or not having
	a fill pointer for the array.

	

Sun Jul 21 12:44:04 1991  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* fix cmac.c for maxima (error in dblrem)

	* sloop for v on l by 'joe
	changed to allow for the possibility that joe is a macro.
	[used by maxima].

Wed Jul 10 10:45:54 1991  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* littleXlsp is included which provides an interface to some
	simple X windows routines.   It is not in the image by default
	See the file lsp/littleXlsp.lsp for directions.

Tue Jul  9 16:29:23 1991  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* add VOL declarations for setjmps in format.c to allow to work
	with gcc on the sparc.
	* add stuff to cmplam.lsp for VOL declarations of &aux variables.
	

Wed Jun 26 20:59:04 1991  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* Change to gc mark of c stack to make sure register windows
	  are flushed, by calling recursively.
	* add special bignum code for rs 6000 and aix 370
	* fix for read suppress and the defstruct reader.
	* Source level debugging improved (see doc/DOC and doc/dbl.el) 
	* Catch infinite recursion of proclaimed functions.   Handle
	segmentation faults on an alternate stack--so don't play around
	to much after a segmentation fault before quitting to top level.
	* support for hp800 (and hp700) added.
	  
	
Wed May 22 14:54:29 1991  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* added new slot to struct stream, to hold the buffer.
	gbc.c and file.d  had been referencing the field in FILE
	directly, but that is not reliable on att Sys V 4.

Thu Apr 11 17:04:54 1991  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* add conc-name to the s-data structure so users may get at
	it (defstruct.lsp).
	* add install_segmentation_catcher() and also in error()
	(ususually arises from real segmentation faults), then turn
	off sgc, if it's on, to avoid having the error handler stall
	on trying to alter pages which are write protected (since
	we are still within the memprotect_handler.

Thu Apr  4 08:37:50 1991  Bill Schelter  (wfs at max.ma.utexas.edu)

	* If HAVE_YP_UNBIND is defined, added to c/main.c the
	unbinding of the default yp domain.  In sun os 4.1
	we were getting a segmentation fault in _yp_dobind_soft()
	on a restarted system.
	

Sat Mar 30 09:01:57 1991  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* Fix listen and clear-input (file.d and read.d).
	macros LISTEN_FOR_INPUT and HAVE_IOCTL are defined in
	att.h, bsd.h, and for the aix systems.   I have tested
	it under aix, sun, 4.3bsd, sgi4d and hpux.   Not sure about
	vannilla sysv (may have to be #undef'd there).
	* fixed pathnames such as "~wfs/foo.lisp" to work.
	(see unixfsys.c).
	

Mon Mar 25 12:25:34 1991  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* Make sure that long float arrays get allocated on multiple of
	sizeof(double ) alignment array.c,gbc.c..  Also unixfasl.c

	* Add to Smakefile an initial execution of xbin/{machine}-fixes
	if that file exists.   Use this for correction of temporary bug
	fixes, such as the bad sgi4d c compiler.


Mon Mar 18 12:06:26 1991  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* The structure of bignums and the underlying code was changed
	completely.   This affected many files including big.c,num_co.c
	print.d, read.d, predicate.c, num_arith.c,.. See the file doc/bignum
	for a discussion.    The compiler was also changed to include
	integer as a primitive type with storage allocated on the stack.
	* A notion of deducing result type from argument types was
	added to the compiler.  Initially we are just doing that for
	the basic integer functions, but it can be extended to others
	* The optimization in cmpopt.lsp have been changed to allow more
	flags to accommodate things like the result-type-from-args.
	The compiler will normally warn (for the time being) if you
	give it old style optimizations.   Because of the extensive
	changes to the compiler I have changed the default safety
	for compiling the cmpnew directory back to 2.  
	
Thu Feb 14 16:06:42 1991  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* debug.lsp, eval.c: fix break-step-next and break-step-into to pass
	the correct environment back so that evaluating variables or
	local functions will be done correctly in the debugger.

Mon Feb 11 16:24:15 1991  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* Fixed *break-points* function to bind the correct enviroment
	so that variables will get the right values.

Mon Jan  7 21:21:22 1991  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* make inline string adjustable (cmptop.lsp)
	* multiple changes to lsp/debug.lsp and lsp/top.lsp
	to allow source line debugging using si::nload.
	* debugger largely redone.   :bt new backtrace
	function (:b still there).  see DOC file
	* add xdr-open xdr-write xdr-read to the si package.
	* akcl 532 compatible with maxima 4-153
	

Wed Dec  5 01:49:50 1990  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* check_alist should allow nil, since the CLTL allows nil
	in place of a cons in an alist.
	* many changes to debug.lsp, eval.c and top.lsp to allow
	source level debugging.   The emacs file dbl.el was added.
	It and the DOC file contain more information, but basically
	there is automatic source display when broken in the debugger
	(for lisp files loaded with nload).

Tue Nov 20 20:07:02 1990  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* Changes to all places where function assignments are made 
	to allow the hook compiler-def-hook, to be run.   This hook
	is used by the new source code debugger dbl.
	* dbl allows debugging of lisp code with a display of an
	arrow in the window opposite the line currently broken at
	or being executed.
	* The safety on the cmpnew files has been changed to safety 0.
	Please notify of any places where this causes a problem!   It
        should result in significantly faster compilation.   The error
	checks should be in the source.

Thu Nov  8 05:31:34 1990  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* fix aix3_mprotect/mprotect.c [wrong calculation of overflow]
	* fix memory_protect in sgbc.c
	

Wed Nov  7 09:56:30 1990  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* Change compiler-clear-compiler-properties, to take 2 args.  This
	is to provide compiler-def-hook, which lets you get the code just
	before it is installed.

	* Misc support for IBM 370 mainframe running under AIX.  (u370)
	* change malloc at startup to use some static space, since
	the gc may not be initialized before some startup routines need
	to malloc (aix3).

	* fix to cmptag.lsp.   Tags in cross closure tagobdies were sometimes not
	being written out. (bug had been there forever).   C compiler would
	fail when the tag was not there.
	

Fri Oct 26 15:00:37 1990  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* change call_proc, the routine used to link proclaimed functions.
	It was not incrementing vs_top soon enough, so that with args
	(t t fixnum), with fast links off, the make_fixnum caused by
	the last arg, might cause a gc which zeroed the vs stack above
	vs_top, so eliminating arg1.   Symptom was an <objnull> passed
	as second arg.   This could only happen when functions were proclaimed,
	and had type not = t.

Sat Oct  6 08:08:47 1990  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* change assoc in list.d so (assoc nil '(nil (nil . a))) --> (nil
	. a)
	  also change cmpfun.lsp in the compiler for this. (bug rep mccain)
	* Allow #' in the (:print-function  #'(lambda (..))  defstruct option
	  (bug report baxter)

Thu Sep 20 19:05:05 1990  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* Fix cmpthrow in cmpcatch.lsp so that handles
	lexical closures correctly.

	* Fix cmpeval.lsp for incrementing a structure slot
	which is fixnum.
	* Fix cmpmain.lsp adding support for the floating point
	save ops on rios.
	

Sun Sep  2 16:44:24 1990  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* Fix perm_writable.  It was leaving out the last page! (Vignaux)

Mon Aug 20 15:15:03 1990  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* fix acos and asin in numlib.lsp   (bug was (acos .5) was complex!)

Wed Aug 15 14:01:06 1990  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* to fasdump.c: close_fasd was munging the array handed
	to it to cleanup.    This could cause gc problems later.

	* Several changes to gc.   The alloc_relblock function fixed
	to take into acount that rb_start - heap_end may not be
	holepage anymore [since if sgc_enabled we have a second
	`sgc' rb_start after the first].    We ensure that nrbpage
	is actually the combined number of pages for relblock,
	for sgc and regular gc. (alloc.c)   

Tue Aug 14 16:04:19 1990  Bill Schelter  (wfs at nicolas.ma.utexas.edu)
	* changes to sgc to the way memory protection is turned on.

	* There may be problems with saving an image with (sgc-on t)
	These have not been resolved, at least under rios, and perhaps
	other machines.

	* many changes for aix 3, for rios

	* for sgi, change the Init_links to come before doinit
	* the sgi4d does not need the links stuff.

Wed Aug  8 21:59:37 1990  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* Change to h/secondary_sun_magic to make it have 8 characters.
	* fix use-package so that allows using a package with an external
	symbol, if that symbol is shadowed by the current package.
	* Several fixes for sun os 4.1 (secondary magic stuff).

Wed May 23 11:47:34 1990  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* Make traced functions stay traced after redefinition
	[change clear_compiler_properties, and its many callers]
	* Fix two bugs introduced in trace.lsp when its functionality
	was increased.
	* fasdump.c (fix coercion).

Thu Apr 12 15:28:49 1990  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* Change behaviour of proclaimed, compiled keyword argument functions, so that
	duplicate keys are allowed, and the leftmost takes precedence.
	[bind.c:parse_key_new]

Mon Apr  9 14:48:43 1990  Bill Schelter  (wfs at nicolas.ma.utexas.edu)
     
	* make subtypep (predlib.lsp) handle types of form '(not p) correctly.   This
	in turn influences compiler optimizer handling of (typep x '(not p))
	* fix read (read.d) so that it allows eof to occur during reading of a semicolon
	comment line.
	* fix c1values (cmpmulti.lsp) so that (values (truncate a b)) does just
	return one value.   

Sun Apr  1 22:11:46 1990  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* make float-digits and float-precision return the significant
	digits in terms of float-radix.
	* If si::*print-nans* is not nil, then the C printing of Nan's
	and infinity surrounded by #< > will be used.

Fri Mar 30 10:24:35 1990  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* gbc.c, sgbc.c: displaced arrays have been a real headache.
        (dotimes (i 5000)  (make-array 1 :element-type 'string-char :displaced-to
              (format nil "0")))
	would cause bad things to happen in kcl and akcl.   I finally decided
	that the link between an array and the array it is displaced to should
	be made firm. 	If A is displaced to B, the user can always do adjust-array
	on A to destroy the displacement.   But from now on, as long as the
	displacement exists then if B is marked this will cause marking of A,
	and vice versa.

Wed Mar 28 16:41:17 1990  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* cmpeval.lsp co1structure-predicate:
	(defstruct foo a b ..) then foo-p was less efficient
	than it had been in some earlier release.
	Note:after (si::freeze-defstruct 'foo) you get the fastest foo-p,
	since this declares the hierarchy of structures including
	foo to be frozen.
	

Wed Mar  7 13:30:57 1990  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* fixed copying of relblock in gc, so that if an array body
	is allocated on C stack [the read_fasd does this for a temp array
	it needs] then this array will not be copied.   In some cases this
	could have caused the copied relblock to exceed nrbpage size, which
	is all that sbrk had provided.

	* read-fasd could not be recursively entered from the lisp_eval calls which
	were possible [from things like require or other package ops].
	Fixed in fasdump.c
	
	
Mon Mar  5 11:54:49 1990  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* Increase BDSGETA to allow some freedom in the debugger after
	a bds overflow.

Tue Feb 27 09:19:49 1990  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* fix printing NIL relative to a package not using LISP.

Tue Feb 20 00:10:58 1990  Bill Schelter  (wfs at fireant.ma.utexas.edu)

	* Add compiler::*split-files*, to allow convenient splittling of
	large lisp files, for C compilers which can't handle infinitely
	long C files.  See doc/DOC file.
        * Fix to fasdump.c.  Broke when a .o file was loaded during compilation.

Fri Feb 16 09:11:08 1990  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* si::*load-pathname* is now bound to the pathname of the current file
	being loaded.  
	

Sat Feb 10 13:36:44 1990  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* Add the co1special prop check in c1symbol-fun, for fixing macros which
	expand into declares in do, do*, prog, prog* (see also cmpfun.lsp)
	* Fix level in c2call-local (bug report by harris).

Tue Jan 23 18:37:58 1990  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* change to siLreplace_array, so that the first word of the old
	array header is preserved, so that in case sgc is on, the
	array won't be marked SGC_RECENT, and so garbage collected if
	there were no pointers to it.

Sun Jan 21 20:30:48 1990  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* Many changes to the compiler:  Only defuns and defmacros are
	compiled by default.    A flag compiler::*compile-ordinaries* if
	t means all forms will be compiled (use this for pcl at the moment).
	See doc under compile-file.
	* eval-when default behaviour changed to be in line with the X3j13
	CL standard.   See compile-file doc.
	files: fasdump.c,cmpaux.c,cfun.c, cmptop, cmpwt,cmpenv, cmpspecial,
	cmpflet.
	* some advantages of the new init scheme.  Some files can be substantially
	smaller, and there is more flexibility in writing out the init.   Things
	like closures which are constant, can be set in as constants.

Thu Jan  4 23:24:46 1990  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* make sublis for eql equal and eq be substantially more efficient.
	  [list.d, and cmpfun.lsp]
        * fix file_exists for AIX (stat returns 0 there even if file
	ending in slash is not a directory (ie /u/all/bmt/.login/ would
	have existed.
	* make boolean be a real type, so that we can distinguish between
	calls to a function which want only a boolean reply or calls
	which need more.   An example is probe-file which can be 30
	times faster when only a boolean reply is needed, not the truename.
	This required changes to cmptype,cmpif cmpinline.
	* add additional optimizations to  cmpopt.lsp.
	* fix vector-push-extend optimization [cmpfun, cmpopt]
	* various fixes to sgc
	
	

Sat Dec 23 18:30:03 1989  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* Fix multiple-value-prog1 in cmpmulti.lsp
	(eval-when (compile) (proclaim '(function foo (t t) t)))
	(defun jil () (multiple-value-prog1 (values 1 2) (foo 3 4)))
	(defun foo (a  b) (joe a b) (cons a b))
	(defun joe (a b) (list a b))
	would have (jil) --> 3 4 until this fix.  This dates from original kcl.
	

Tue Dec  5 20:22:58 1989  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* changes to alloc.c, gbc.c, page.h, object.h to allow stratified
	garbage collection [SGC].   This should help systems with
	a large amount of relatively static data.   Only pages written
	to since sgc-on need be marked and swept.   See DOC file.

Sat Nov 11 07:08:27 1989  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* Add various va_end(ap)'s to match unmatched va_start's.
	* add in some changes for hp300's faslink.
	* add additional support for cmpnew/collectfn.lsp   See the
	documentation in the DOC file for emit-fn and friends.
	Basically it is for getting proclamation info, who-calls info,
	undefined info, from a pass of the compiler on a system.
	* add additional undefined warnings for undefined lisp package
	functions in addition to the list-undefined-functions.

	

Tue Oct 31 06:02:18 1989  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* add support of Iris 4d machine.
	* Fix COERCE_VA_LIST for non standard machines, to
	take the argument n. 
	* Make sure defun, defmacro,.. clear the accessor property
	for defstruct slots.

Sat Oct 28 11:06:25 1989  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* remove an abort() from rel_sun4.c.   This type
	of relocation now occurs, and our method has been tested.
	

Fri Oct 27 23:01:42 1989  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* if the *system-directory* directory contains the file sys-init.lsp
	then this file will be loaded at startup.   This facility
	is used for printing the warning message at startup, but
	can be used for local modifications.   Also by having two
	system directories [via links and different commands]
	different startups could be loaded.    All this is in
	addition to the regular init.lsp.   The purpose of this
	is to allow patches to be loaded, without requiring a
	resaving of the image. [Recall the system directory
	is the first argument to invoking a saved_kcl, or
	the first part of the pathname if there is not a first arg
	Typically it is the unixport directory if you use the
	xbin/kcl command]

Tue Oct 24 20:23:56 1989  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* Add packlib to the unixport/boots file so that help*
	gets compiled using the new do-symbols macro.
	* Add alternate malloc.c file from gnu emacs, if you
	define GNU_MALLOC.   This runs much faster (15X) if you are
	incorporating lots of C code with mallocs.
	

Thu Oct 19 21:28:25 1989  Bill Schelter  (wfs at nicolas.ma.utexas.edu)

	* add si::fwrite and si::fread for doing io on file streams.
	* Eliminate the need for the separate compiler file cmpinclude.h
	This means that only one file is now needed for an executable,
	and there won't be confusion over which cmpinclude.h goes with
	which version.   We store the file as a string, and write it
	into the c files as they are compiled [if *cmpinclude-string* is
	a string and :system-p t is not given to compile].   The time
	difference for doing the extra write is not measurable, even
	with tiny compiles.

Wed Oct  4 23:41:17 1989  Bill Schelter  (wfs at rascal)

	* co1eql was causing a double evaluation
	in some special circumstances.
	

Mon Oct  2 08:48:30 1989  Bill Schelter  (wfs at rascal)

	* Many changes to the compiler to support &optional, &rest
	&key args to be passed on the C stack.  This is still limited
	to functions proclaimed to return one value.
	* Allow user to grow the stacks from top level [see *multiply-stacks*
	doc]
	* Code for making proclamation files and collecting
	cross referencing data in cmpnew/collectfn.lisp.   This
	is to allow a second compile of a system to take advantage
	of information obtained in the first compile.
	* catch-fatal added.
	* read.d float read fixed for little endian machines.
	* do,prog,prog* and do* compilation fixed so that declare's
	at the beginnning of the bodies	which are hidden by macros, are
	detected and processed.
	* :dynamic-extent declaration recognized to allow &rest
	* proclaimed functions with one return value, will now be
	compiled to use the C stack even if they have more than 10 args.
	
	
	

Tue Sep  5 22:15:23 1989  Bill Schelter  (wfs at rascal)

	* Change add-function-proclamation to be more efficient
	when handed long lists of proclaims.   Maxima for example
	generates 3871 proclaims of functions.  This now takes
	4 seconds instead of 2 minutes.

Mon Sep  4 00:25:29 1989  Bill Schelter  (wfs at rascal)
        * cfun_to_combined fixed for t_sfun,t_gfun.
	  
	* ihs_function_name fixed for t_sfun,t_gfun
	Mainly used in error handling and printing.

	* compiled-function-name fixed to handle t_sfun,t_gfun
	[this is used in the error handler]

Thu Aug 31 09:57:09 1989  Bill Schelter  (wfs at rascal)

	* fix reduce in seqlib.lsp.   

Wed Aug 30 16:44:05 1989  Bill Schelter  (wfs at rascal)

	* change cmpeval.lsp,cmploc.lsp to make small fixnums
	write out without the indirection through VV


	
        ---------Version 206-------------

Mon Aug 28 13:44:49 1989  Bill Schelter  (wfs at rascal)

	* cmptag.lsp:add-reg changed to handle dotted list case

	* Added new types t_sfun, t_gfun of compiled function
	objects to save space and speed funcall.  See doc/funcall
	for details.   Many c files changed as well as compiler.
	
	* cmpeval.lsp: made #, have the c1special property,
	instead of c1, so these will compile properly on safety 3

	* add si::set-mv, si::mv-ref, to allow people to implement
	faster version of multiple values.  Someday this way will
	be the default [see doc/multiple-values and lsp/fast-mv.lisp] 
	 
	

Thu Aug 10 11:51:05 1989  Bill Schelter  (wfs at rascal)

	* Fixed prev  fix to print in print.d so that ok if stream = t.
	

Mon Aug  7 10:19:11 1989  Bill Schelter  (wfs at rascal)

	* Support for HP300bsd (bsd from mt xinu) added.
	* print fixed to add space after printing.
	* describe modified to print more information on structures

Fri Jul 28 09:18:15 1989  Bill Schelter  (wfs at rascal)

	* trace.lsp  Add keyword args allowing special
	entry, exit, conditional and other handling of
	traced forms.   You can for example specially print
	args, or break if args or values are inappropriate.
	See file doc/trace.
	
	* c1decl-body: recognize safety level on first pass.

Sat Jul  8 15:21:42 1989  Bill Schelter  (wfs at rascal)

	* defstruct.lsp and read.d:
	Fix patch_sharp to handle structures, and sharp-s-reader
	to do its reads recursively.
	Allows constructs such as #1=#S(joe a #1#)  to work.
	

Fri Jul  7 13:40:45 1989  Bill Schelter  (wfs at rascal)

	* make sure the co1 properties are cleared when functions
	are defined.

Mon Jul  3 15:05:51 1989  Bill Schelter  (wfs at rascal)

	* Fix sharp-s-reader in defstruct.lsp and remove it
	from iolib.lsp
	* remove =* and =- from gbc.c package.d
	* fix c1value to behave correctly when one value supplied
	in cmpmulti.lsp
	* change #. and #, to interact correctly when called
	after #+ or #-	

Fri Jun  2 20:48:06 1989  Bill Schelter  (wfs at rascal)

	* sfasl.c gbc.c change error messages from using stderr
	to stdout.   Note the first file descriptor the user
	opens is typically stderr, so these error messages (which
	rarely occurred) did not appear on the screen but rather
	caused resetting the file pointer of the user's stream!

Wed May 31 20:31:04 1989  Bill Schelter  (wfs at rascal)

	* package.d,symbol.d, packlib.lsp:   Changes
	to package hashing and intern.   Allow flexibly
	sized packages instead of insisting that all
	internal and external packages use table with 512 elts.
	I recommend a prime number as size.   The size of
	the internals table is automatically grown when there are 2 x
	as many symbols as the table size.
	For the byte-reader.im-test file (580K) the read time
	went from 24 seconds to 16.8 seconds. (had been 53 seconds).
	in-package and make-package take keyword args
	:external and :internal to allow specification of the
	size of the table for a new package.

Tue May 30 23:00:46 1989  Bill Schelter  (wfs at rascal)

	* fix writing of small and large double floats
	in cmpeval.lsp, so that all numbers from smallest
	double to largest may be included as constants
	in compiled code.


Sun May 28 16:22:07 1989  Bill Schelter  (wfs at rascal)

	* array.c:array_allocself takes an additional argument,
	specifying the default value, or NULL if no initial
	value is to be given. 
	si::make-vector has an additional optional arg of the
	default value.
	* seqlib also has calls to array_allocself, which take
	a 0 final arg, indicating that the initialization
	is not to be done.
	* array.c: siLcopy_array_portion added, to allow quick copying
	from one array to another.
	* In top.lsp the *eof* is changed to a local, so as not
	to conflict with the si::*eof*  which is the value returned
	by the system when doing getc.
	g 
	

Fri May 12 10:57:39 1989  Bill Schelter  (wfs at rascal)

	* Add optimization for (type x 'foo) where
	foo is a structure.  This also affects foo-p.
	If you (setq compiler::*frozen-defstructs* t)
	this allows the compiler to assume that a given
	defstruct will not be extended (by including
	it in more structures) by new defstructs loaded
	in later files.  This can significantly speed
	up type checking.


Thu May 11 07:43:52 1989  Bill Schelter  (wfs at rascal)

	* Fix omission of the extended mul for sun4 in 1.22
	Now a new dependent feature EMUL lets you specify
	an assembler file in the o directory, which will
	be loaded in at the end.

	* AKCL added to the *features* list.    This is
	now necessary because of internal differences in structures
	between the standard kcl and akcl.

	Structure changes are pretty well complete.

Wed May  3 12:11:54 1989  Bill Schelter  (wfs at rascal)

	* Fix ceiling and floor (num_co.c) by riley

Mon May  1 08:05:55 1989  Bill Schelter  (wfs at rascal)

	* fix to gc of displaced arrays.  (bug report
	and partial fix by riley).    Files gbc.c array.c
	undisplace was referrring to possibly freed list
	structure.

	* Structures are being completely reworked.
	There are two reasons:
	      
	To use much less overhead at compile time of the
	original defstruct.
	
	To allow raw types in defstructs, and allow packing
	of these.    For example a slot (x 0 :type (mod 50)) will
	only require 1 byte.  These structs may be made to
	coincide with C structs more closely.   All ptr or full
	fixnum fields will be aligned on a multiple of the size
	of ptr however for speed of reference and portability.

	Needless to say recompilation is necessary for most files.
	System files affected gbc.c, defstruct.c, predicate.c, print.d
	defstruct.lsp cmpfun.lsp cmputil.lsp cmpeval.lsp predlib.lsp
	and maybe some other small changes.

	Naturally significant speedups will be gained if one can
	keep integers in raw form:
	(defstruct ja1 (a #\a :type character)(b 0 :type fixnum))
	(defun joe (x n) (sloop::sloop for i below n do (setf (ja1-b x) i)))
	Then (joe (make-ja1) 1000000) takes less than 1 second now,
	as opposed to over 50 seconds prior to these changes.
	

Wed Apr 26 11:59:43 1989  Bill Schelter  (wfs at rascal)

	* Add message feature for AKCL start up.  If unixport/message
	exists and unixport/message-suppress does not, then
	the file unixport/message will be printed on start up. (top.lsp)

	* make o/akcllib.a, a library containing bcmp .. and other
	common functions which are not present in all versions of unix.
	The main link puts this after -lc, so that faster implementation
	dependent versions will be used if they exist.

Mon Apr 24 20:28:49 1989  Bill Schelter  (wfs at rascal)

	* Change to eliminate char_table.s assembler code.
	This change will unfortunately require users to recompile
	their object code for use with this system.

	* Fix bug in cmpinline.lsp, which was allowing
	(rplacd (cons a b) nil) to give the wrong code.

	* Add timing for gc, and allow have the si::*notify-gbc*
	flag cause printing the type of gc.
	To time gc's. do (si::gbc-time 0), to set the timer to
	0, (si::gbc-time -1) to reset and turn it off.  It
	returns an integer in internal time units, similar
	to get-internal-run-time.
	
	* Speed up the lisp reader and intern.  On a large file the
	read is 2.4 times faster than it was.

	* Many small changes to the include files, to eliminate duplicate
	definitions of symbols, (not allowed by some compilers)
	and also adding COMM_LENG, which can be null for most compilers
	but should be a small integer for the IBM c compiler (it
	does not accept external declarations int foo[], so we do
	foo[COMM_LENG];
	
	
Fri Apr 21 18:13:23 1989  Bill Schelter  (wfs at rascal)

	* Fix bug with the new fast read-byte,....
	If the stream argument was supplied, and was not a stream
	but rather T or NIL, there was a problem.   If you declare
	the arg to be of type stream, then you will get identical
	code to before;  otherwise a typecheck for type stream
	will be supplied, branching into the slower code for
	non streams.
	Files cmpopt.lsp and cmptype.lsp
	

Tue Apr 18 22:56:54 1989  Bill Schelter  (wfs at rascal)

	* More changes to read-byte, write-byte, read-char and
	write-char.   I have removed the :in-file and :out-file
	declarations, and the speed up for the undeclared streams
	should be virtually the same as obtained with the declarations.
	This will affect mainly file streams.   Files cmpfun.lsp,
	cmpopt.lsp, cmpinclude.h, read.d

	Note that on read-byte it is still advantageous to use an
	eof which is a fixnum.

	reads where the eof-error-p arg is not nil are not speeded up.

	It is still the case that two way streams are not speeded up,
	however if (si::fp-input-stream str) returns non nil, then
	you can use the resulting stream for fast input.

Thu Apr 13 00:20:11 1989  Bill Schelter  (wfs at rascal)

	* fixes to subtypep (as reported by riley)

	* changes to allow faster operation of read-char,write-char,
	read-byte and write-byte, when operating on file streams.
	In order to use these you should declare the stream
	to be :in-file or :out-file.
	You can use (typep str :in-file) to
	check if it is really valid.   

	(defun myread (str)
         	(declare (:in-file str))
		(the fixnum (read-byte str nil -100)))

        The above changes should work for ansi C style stdio,
	in particular for unix io.  At the moment it is conditionalized
	for +unix.
	files: cmpfun.lsp, cmpopt.lsp, cmtype.lsp, file.d, cmpenv.lsp

	The difference in reading speed is substantial: eg 3 microseconds
	as opposed to 60 microseconds for read-byte.

	To make your code portable do
	(proclaim '(declaration  :in-file))

	In order for the optimizations to cut in, 
	the read functions must be supplied with 3 args and the
	write functions with 2.  The second of the read args
	must be nil.
	Note with read-byte, using an eof value which is a fixnum,
	allows you to declare the location you will pass to as a fixnum.
	
	
	
Wed Mar 22 17:19:03 1989  Bill Schelter  (wfs at rascal)

	* Change c1fmla-constant in cmpif.lsp.
	(if (null 2) x y ) was yielding x not y!

Sun Mar 19 12:26:21 1989  Bill Schelter  (wfs at rascal)

	* fix stream_at_end, so that a stream opened for  `io'
	does the check, when reading, so that read can
	return eof properly.

Sun Mar 12 01:40:53 1989  Bill Schelter  (wfs at rascal)

	* speed up the intern of symbol in pack_hash
	computation.

	* psetf bug in case of two args (psetf a 3)
	not passing the environment.   setf.lsp
	

Fri Feb 24 22:27:22 1989  Bill Schelter  (wfs at rascal)

	* add fixes for &environment to allow it to come
	anywhere in the lambda list. defmacro.lsp and cmplam
	(change from R. Harris).

Wed Feb 22 17:24:30 1989  Bill Schelter  (wfs at rascal)

	* fix tree-equal to save the previous test in list.d
	(assoc '(c) '((a b) ((c) d)) :test #'tree-equal) failed.
	(by Cooperman)

Sun Feb 19 17:42:31 1989  Bill Schelter  (wfs at rascal)

	* Fix hash_equal in hash.d.  It was broken for circular
	structures or lists.   This would affect sxhash as well
	as equal hash tables.

	* Fix obscure bug in compiler in cmptop.lsp, which could
	possibly leave out a sup declaration.   The c compiler
	would catch this.

	* Fix comparison of arrays under equalp in c/predicate.c
	It had been broken for rank different from 1.
	* Fix the assembler for the sun4 in sun4_chtab.s for
	multiply.  (bug report by Harris).

Fri Dec  9 00:47:46 1988  Bill Schelter  (wfs at rascal)

	* Made changes to sfasl to make it more portable.
	* added structures and characters to the types
	handled by fasdump.c
	* changed the c stack check in gbc.c to use cs_check.

Sun Nov 27 12:31:13 1988  Bill Schelter  (wfs at rascal)

	* Add si::fp-input-stream, si::fp-output-stream,
	Which take one arg a stream, and return a stream
	with an strm->sm.sm_fp slot suitable for use with fread and fwrite.
	If this is not possible nil is returned.
	

Wed Nov  2 16:09:17 1988  Bill Schelter  (wfs at rascal)

	* inline-args fix:
	(defun x (c s i)
	  (declare (optimize (safety 2)))
	  (declare (fixnum i))
	  (setf (char s (setq i (1+ i))) c))
	 made c, not just i a fixnum in the char compilation,
	 fixed in inline-args (by E. Wang)  edward@ucbarpa.Berkeley.EDU
	 file cmpinline.lsp

Wed Oct 12 17:01:06 1988  Bill Schelter  (wfs at rascal)

	* Added new array types:   files cmptype,array.c,typespec.c,cmpopt,
	  predlib.lsp, gbc.c,  and maybe some others.
	  Purpose of the change was to allow programs like CLX which
	  use lots of numerical arrays, to be much more economical.
	  Also make-array now coerces the element-type in a reasonable
	  way, and the same handling is used in the compiler.
	  
	  New array element types:
	  signed-char,  unsigned-char,  signed-short, unsigned-short
	  The ranges on a SUN are
	  ((INTEGER -128 127)	    (INTEGER 0 255) (INTEGER -32768 32767)
	   (INTEGER   0 65535)) respectively.
	  Note that now
	  make-array will always try to find the `best' array to
	  accommodate the element-type specified.   For example on a SUN
	  (mod 1) --> bit
	  (integer 0 10) --> unsigned-char
	  (integer -3 10) --> signed-char
	  si::best-array-element-type is the function doing this.  It
	  is also used by the compiler, for coercing array element types.
	  If you are going to declare an array you should use the same
	  element type as was used in making it.  eg
	  (setq my-array (make-array 4 :element-type '(integer 0 10)))
	  (the (array (integer 0 10)) my-array)
	  

	  
	  ..  When wanting to optimize you need to make a reference:
	  (the fixnum (aref (the (array (integer -3 10)) ar) (the fixnum i)))
	  if ar were constructed using the (integer -3 10) element-type.
	  You could of course used signed-char, but since the ranges
	  may be implementation dependent it is better to use -3 10 range.
	  make-array needs to do some calculation with the element-type
	  if you don't provide a primitive data-type.  One way of doing
	  this in a machine independent fashion:
	  (defvar *my-elt-type* #. (array-element-type (make-array 1
	  :element-type '(integer -3 10))))
	  Then calls to (make-array n :element-type *my-elt-type*)
	   will not have to go through a type inclusion computation.
	  
	   
	   
Tue Oct 11 09:52:13 1988  Bill Schelter  (wfs at rascal)

	* When using gcc, it could happen that there was
	a string in in the init function, which got placed
	before the init function.  Had to add -fwritable-strings
	to stop this.

Sun Oct  2 13:35:11 1988  Bill Schelter  (wfs at rascal)

	* Fix MP386 and att port bugs, introduced with the
	new mp386.h, att.h and mp386.defs files.
	* Fix unixtime at least for bsd, so that get-internal-real-time
	does not wrap every few hours, but will not wrap below 400 days.
	* Fix directory problems with compiling in other than the current
	directory, in the name of the file specified in the include.
	The command on most systems cd 's to the directory to run the
	cc, and so the .h file needed to use an unprefixed name.
	

Sat Sep 24 16:02:22 1988  Bill Schelter  (wfs at rascal)

	* Changes to the computation of double-float-epsilon
	and more generally XX-epsilon.  First they did not
	satisfy the condition of
	(defun fo (e) (not (= (float 1 e) (+ (float 1 e) e))))
	(fo double-float-epsilon) --> t
	as per CLtL.   As it stands they at least satisfy the
	test, although there may be floats slightly smaller which
	also do.
	
	Second on some machines (eg HP) the calculation done
	in line, carried more precision than that which would
	be normal when passed through eql, so that we changed
	the test == in constructing the double float epsilon
	to use a function call.  Otherwise the epsilon was
	~10^-20 instead of the correct ~10^-16.

Thu Sep 22 14:08:07 1988  Bill Schelter  (wfs at rascal)

	* Fixed hash_equal not to use the cast to int,
	in computing hash of a symbol name
	since this made sun4's unhappy (file hash.d ).

Wed Sep 14 12:02:35 1988  Bill Schelter  (wfs at rascal)

	* fix to setf to make sure that
	(defmacro joe (x) `(progn t (car ,x)))
	(defsetf joe rplaca)
	work correctly.   files changed are assignment.c and setf.lsp
	The defsetf'd definition takes precedence in the macroexpansion.
	The bad order was introduced when the evaluation of the macros including
	their environments was introduced (see below).

Mon Sep 12 10:09:56 1988  Bill Schelter  (wfs at rascal)

	* use varargs.h for bind.c and list.d where
	variable length args are passed.  We only use
	va_arg(ap,object) to access the next arg now.
	There are no more indexed references, since that
	is less portable.

	* A major change for porting:  Each machine type
	now has a .h file of its own, and things like alloc.c,
	main.c, unixsave.c  no longer should be modified for
	individual machines.  The file config.h is a link
	from `your-machine`.h and things like the VSSIZE,
	are also specified in that file.  There are also
	files such as bsd.h , att.h (for system V) which
	can be included by the various special machine files.

	* c support for extended_div was added, and will
	be used if USE_C_EXTENDED_DIV is defined.  The only
	function which does not have a C definition on the sun4
	version is extended_mul.  Note that the c version
	of extended_div is included in big.c rather than earith.c
	since the latter is not compiled with the optimize switch.

	* The assembler functions of bitop.c had been being redefined
	by macros in gbc.c in an earlier change (this was actually
	4 times faster on a sun3), and now those functions have
	dummy definitions, which will go away soon.

Wed Aug 31 23:38:08 1988  Bill Schelter  (wfs at rascal)

	* use varargs for the funlink of proclaimed functions,
	This affects cmpcall.lsp, funlink.c and requires
	<varargs.h> to be included by cmpinclude.
	The old variable arg business was not portable to risc
	architectures, where args are passed in registers.

        * make print return a value in print.d
	Hope there are not more `implicit returns' hidden away.		      

Fri Aug 19 15:13:06 1988  Bill Schelter  (wfs at rascal)

	* Make (subtypep 'string-char 'character) --> t

Wed Aug  3 11:33:20 1988  Bill Schelter  (wfs at rascal)

	* I have removed the dynamic growing of the special binding
	stack which I had added a few months ago (cf bds.h,main.c,bds.c.)
	   It had ignored
	the fact that some functions eg, Levalhook grab a pointer
	into the bds rather than just an index.  These could easily have
	been changed, but until we allow the other stacks to grow
	dynamically, it is of questionable value.  

Fri Jul  1 09:41:36 1988  Bill Schelter  (wfs at rascal)

	* allow assoc to take key in c/list.d as per mail
	  442  23-Jun  pc%linus@mitre-bedford.ar  KCL Bug: assoc doesn't take :key


Wed Jun 15 16:46:40 1988  Bill Schelter  (wfs at rascal)

	* Added support for switch construct (see cmpnew/cmptag.lsp
	for documentation)
	This will allow compiling into the c switch construct
	if (the test variable is declared to be a subtype of
	fixnum) which can then allow much faster switching on
	cases.  To do:Should optimize some of case constructs into
	switch, where applicable.

Wed Jun  8 11:43:00 1988  Bill Schelter  (wfs at rascal)

	* Altered the marking of the c stack in gbc.c.
	Now the current location for the c stack is taken
	in a separate function from the one where the environment
	is forced onto the stack, so that we don't have to
	depend on the c compilers doing things in the expected
	order.  See mark_stack_carefully.  Also added a flag
	C_GC_OFFSET which if defined to 2, will mark
	the stack twice once on 4m and once on 4m+2.

	* changed the initialization in main.c of bds_org
	and bds_limit.
	
	This is to fit in with the earlier change to
	bds_overflow, to allow the bds to grow.   bds_org
	is now a pointer rather than a hardwired value.
	

Tue Jun  7 04:44:15 1988  Bill Schelter  (wfs at rascal)

	* Fix equalp to use the fill-pointer as a limit
	when comparing strings,vectors and bitvectors.
	

Mon Jun  6 11:29:08 1988  Bill Schelter  (wfs at rascal)

	* Fix rotatef in setf.lsp to return NIL per CLtL
	* Fix handling of &rest arg in cmplam.lsp
	c2lambda-expr-without-key as per bug fix of Yuasa
	12-Nov  yuasa%kurims.kurims.kyoto  A bug fix
	* Add the fix to quick-sort as per
	   67  12-Jan  yuasa%tutics.tut.junet%ut  Re: sort bug
	* Add fix for shadowing-import per
	   68  12-Jan  yuasa%tutics.tut.junet%ut  Re: SHADOWING-IMPORT doesn't
	* Fix (random 0) bug, adding TSpositive_number type. as per
	   69  12-Jan  yuasa%..  Re: (random 0) => losing error message
	* Fix (make-array  2 0) bug per
         70  13-Jan  yuasa%tutics.tut.junet%ut  Re: Nil is a sequence
	* Add bogus value (*READ-DEFAULT-FLOAT-FORMAT* t) when
	printing a float in a compiled file, so that it will always
        add the type in the printing, and we won't get a float
	type different from that used at compile time
	cf.    80  28-Jan  yuasa%tutics.tut.junet%ut  Re: float numbers
	* Add fix for bug
	setf (aref x (decf i)) (aref x 1)) ->
		"base[2]= aset1(base[0],V1,fix(base[1]));"
	to cmpinline.lsp, as per
	   92   8-Feb  yuasa%tutics.tut.junet%ut  Re: compiler bug?
	*All fixes by yuasa in the kcl-mail-archive  thru Jun 88
	are now incorporated in akcl
	* Altered cmp-macroexpand-1 to use the local macro environment
	



Wed Jun  1 13:29:57 1988  Bill Schelter  (wfs at rascal)

	* Altered macros.c to pass the function-macro environment
	if it is non nil.  This is needed so that macro expansion
	functions can be called in the correct environment.
	Altered cmputil.lsp so that cmp-macroexpand and cmp-macro-expand
	both use the current compiler macro environment.
	Finally altered setf, so that it looks at the macro
	environment when it expands the place.

	Deleted treatment of setf as special form by the compiler,
	(introduced yesterday!)
	now that macros are handled correctly, and it is defined
	correctly as a macro.

	Things like
	(macrolet ((ab nil 'a)) (setf (the fixnum (ab)) 3))
	Now work to give (set 'a (the fixnum 3)) as expected.
	
	

Mon May 30 11:40:47 1988  Bill Schelter  (wfs at rascal)

	* Altered setf to macroexpand the place in the current
	lexical environment so that
	(macrolet ((joe nil 'bil))(setf (joe) n))
	would behave correctly.  This change was in assignment.c
	in `setf' and also in cmputils.lsp adding c1setf, to
	get analagous treatment for compiler.
	To do:
	It is still not totally correct:  I don't handle
	(macrolet ((joe nil 'bil))(setf (the fixnum (joe)) n))
	but
	(macrolet ((joe nil '(the fixnum bil)))(setf (joe) n))
	is ok.

Tue May 24 09:38:58 1988  Bill Schelter  (wfs at rascal)

	* Changed float to return single-float if given only one
	arg, as per CLtL.

	* Added a dynamic growth feature the bds stack, changing
	bds_org to be a variable rather than a macro, and altering
	bds_overflow.
	
	*Enforce  substantial constraints on downward closures ,to be relaxed
	at a future date: Currently no args, and no cross references
	to other types of closures.   This is done in check-downward
	in t1defun.