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Set up Qcurrent_load_list.
(readevalloop): Specbind Qcurrent_load_list instead of ad-hoc saving.
(build_load_history): Do nothing when loading pure files.

	to get the extern declarations for atof.  That's where it is in
	POSIX.

	* lread.c (read_filtered_char): New function, which contains the
	code which used to be in Fread_char, Fread_event, and
	Fread_char_exclusive; there was a lot of common code.
	(Fread_char, Fread_event, Fread_char_exclusive): Rewrite in terms
	of read_filtered_char.
	* lisp.h (read_filtered_char): Declare this extern here.
	* fns.c (Fy_or_n_p): Call read_filtered_char, arranging to delay
	switch-frame events.

All calls changed.  Do the two-step
necessary to call build_load_history with the correct current-globals
list for the current recursion.
(build_load_history): New function.
(eval_region, eval_buffer): Call readevalloop with new arg.
(load_history): New variable.

	This isn't specific to X, and it allows us to avoid #including
	xterm.h in files that don't really have anything to do with X.
	* blockinput.h: New file.
	* xterm.h (BLOCK_INPUT, UNBLOCK_INPUT, TOTALLY_UNBLOCK_INPUT,
	UNBLOCK_INPUT_RESIGNAL): These are now in blockinput.h.
	(x_input_blocked, x_pending_input): Deleted; there are analogs
	in blockinput.h called interrupt_input_blocked and
	interrupt_input_pending.
	* keyboard.c (interrupt_input_blocked, interrupt_input_pending):
	New variables, used by the macros in blockinput.h.
	* xterm.c: #include blockinput.h.
	(x_input_blocked, x_pending_input): Deleted.
	(XTread_socket): Test and set interrupt_input_blocked and
	interrupt_input_pending instead of the old variables.
	* alloc.c, xfaces.c, xfns.c, xmenu.c, xselect.c, keymap.c:
	#include blockinput.h.
	* eval.c: #include blockinput.h instead of xterm.h.
	* keyboard.c: #include blockinput.h.
	(input_poll_signal): Just test
	interrupt_input_blocked, instead of testing HAVE_X_WINDOWS and
	x_input_blocked.

	Block the processing of interrupt input while we're manipulating the
	malloc heap.
	* alloc.c: (xfree): New function, to make it easy to free things
	safely.
	(xmalloc, xrealloc): Block X input while doing the deed.
	(VALIDATE_LISP_STORAGE, gc_sweep, compact_strings): Use xfree
	instead of free.
	(uninterrupt_malloc): New function, to install input-blocking
	hooks into the GNU malloc routines.
	* emacs.c [not SYSTEM_MALLOC] (main): Call uninterrupt_malloc
	on startup.
	* alloc.c: (make_interval, make_float, Fcons, Fmake_vector,
	Fmake_symbol, Fmake_marker, make_uninit_string, Fgarbage_collect):
	Use xmalloc instead of malloc; don't bother to check if out of
	memory here.
	(Fgarbage_collect): Call xrealloc instead of realloc.
	* buffer.c: Use xmalloc and xfree instead of malloc and free;
	don't bother to check if out of memory here.
	(Fget_buffer_create): Put BLOCK_INPUT/UNBLOCK_INPUT pair around
	calls to ralloc routines.
	* insdel.c: Same.
	* lisp.h (xfree): New extern declaration.
	* xfaces.c (xfree): Don't #define this to be free; use the
	definition in alloc.c.
	* dispnew.c, doc.c, doprnt.c, fileio.c, lread.c, term.c, xfns.c,
	xmenu.c, xterm.c: Use xfree instead of free.
	* hftctl.c: Use xfree and xmalloc instead of free and malloc.
	* keymap.c (current_minor_maps): BLOCK_INPUT while calling realloc
	and malloc.
	* search.c: Since the regexp routines can malloc, BLOCK_INPUT
	while runing them.  #include blockinput.h.
	* sysdep.c: #include blockinput.h.  Call xfree and xmalloc instead
	of free and malloc.  BLOCK_INPUT around routines which we know
	will call malloc.

	ymakefile (keyboard.o, keymap.o, search.o, sysdep.o, xfaces.o,
	xfns.o, xmenu.o, xterm.o, xselect.o, alloc.o, eval.o): Note that
	these depend on blockinput.h.

(Fread_char, Fread_char_exclusive): Use that property
to convert symbols like tab, return, M-return,... to ASCII.

Include termhooks.h.
(read_escape): Handle \H, \A, \s.  Use ..._modifier.

(read1): Move the meta bit to the right place for a string.

Detect end of list, and invalid syntax, using recursive read1 calls.

(read1): Handle reading strings with properties.

	number of arguments to unbind_to.
	* lread.c (Feval_buffer): Same.
	* window.c (Fscroll_other_window): Same.

	integer, a single . by itself (like, say, \.) should be a symbol.

inhibit the ordinary message that would follow.

	(Fread_char, Fread_char_exclusive): Don't signal an
	error for or throw away switch-frame events; instead, put them off
	until after we've found a character we can respond to.

	Rename unread_command_char to unread_command_event; it has
	subtly different semantics now, and we should use
	`make-obsolete-variable' to warn people.
	* lread.c (Fread_char): Change reference.

	indicating that it returns a Lisp_Object.

	setting the appropriate slot in buffer_local_types.