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On Fedora 19 x86-64, the new bswap_64 needs 1 instruction,
whereas the old swap64 needed 30.
* admin/merge-gnulib (GNULIB_MODULES): Add byteswap.
* lib/byteswap.in.h, m4/byteswap.m4: New files, copied from Gnulib.
* lib/gnulib.mk, m4/gnulib-comp.m4: Regenerate.
* src/fringe.c (init_fringe_bitmap) [WORDS_BIGENDIAN]:
* src/sound.c (le2hl, le2hs, be2hl) [!WINDOWSNT]:
Use byteswap.h's macros to swap bytes.
* src/lisp.h (swap16, swap32, swap64): Remove.
All uses replaced by bswap_16, bswap_32, bswap_64.

to work around local variables getting clobbered by longjmp.
Port to pre-C99, which doesn't allow decls after stmts.

In other words, take on the behavior of eassert_and_assume.
This makes Emacs 0.2% smaller on my platform (Fedora 19, x86-64).
(eassert_and_assume): Remove.  All uses replaced by eassert.

* src/conf_post.h (__has_builtin, assume): Remove; gnulib now does these.
* src/lisp.h: Include <verify.h>, for 'assume'.

This also incorpoprates:
2013-10-02 verify: new macro 'assume'
2013-09-26 dup2, dup3: work around another cygwin crasher
2013-09-26 getdtablesize: work around cygwin issue

(internal_catch, internal_condition_case)
(internal_condition_case_1, internal_condition_case_2)
(internal_condition_case_n): Use it instead of eassert
when the argument contains locals clobbered by longjmp.
Don't use clobbered locals outside of clobbered_eassert.
(internal_lisp_condition_case): Use a volatile variable
to work around a local variable's getting clobbered.

* lisp/emacs-lisp/byte-opt.el (byte-optimize-form-code-walker):
Optimize under `condition-case' and `catch' if
byte-compile--use-old-handlers is nil.
(disassemble-offset): Handle new bytecodes.

* lisp/emacs-lisp/bytecomp.el (byte-pushcatch, byte-pushconditioncase)
(byte-pophandler): New byte codes.
(byte-goto-ops): Adjust accordingly.
(byte-compile--use-old-handlers): New var.
(byte-compile-catch): Use new byte codes depending on
byte-compile--use-old-handlers.
(byte-compile-condition-case--old): Rename from
byte-compile-condition-case.
(byte-compile-condition-case--new): New function.
(byte-compile-condition-case): New function that dispatches depending
on byte-compile--use-old-handlers.
(byte-compile-unwind-protect): Pass a function to byte-unwind-protect
when we can.

* lisp/emacs-lisp/cconv.el (cconv-convert, cconv-analyse-form): Adjust for
the new compilation scheme using the new byte-codes.

* src/alloc.c (Fgarbage_collect): Merge scans of handlerlist and catchlist,
and make them unconditional now that they're heap-allocated.

* src/bytecode.c (BYTE_CODES): Add Bpushcatch, Bpushconditioncase
and Bpophandler.
(bcall0): New function.
(exec_byte_code): Add corresponding cases.  Improve error message when
encountering an invalid byte-code.  Let Bunwind_protect accept
a function (rather than a list of expressions) as argument.

* src/eval.c (catchlist): Remove (merge with handlerlist).
(handlerlist, lisp_eval_depth): Not static any more.
(internal_catch, internal_condition_case, internal_condition_case_1)
(internal_condition_case_2, internal_condition_case_n):
Use PUSH_HANDLER.
(unwind_to_catch, Fthrow, Fsignal): Adjust to merged
handlerlist/catchlist.
(internal_lisp_condition_case): Use PUSH_HANDLER.  Adjust to new
handlerlist which can only handle a single condition-case handler at
a time.
(find_handler_clause): Simplify since we only a single branch here
any more.

* src/lisp.h (struct handler): Merge struct handler and struct catchtag.
(PUSH_HANDLER): New macro.
(catchlist): Remove.
(handlerlist): Always declare.

instead of the docstring to discourage use of the `restriction' arg.
(error): Use `declare'.
* src/charset.c (Fdecode_char, Fencode_char): Remove description of
`restriction' arg. now that it's hidden by advertised-calling-convention.

(FRAME_HAS_MINIBUF_P): ...this macro can be implemented without it.
* frame.c (make_frame, make_minibuffer_frame): Adjust users.

for phys_cursor_type member.  Move the latter, phys_cursor_width,
phys_cursor_ascent and phys_cursor_height under HAVE_WINDOW_SYSTEM.
* window.c (replace_window, make_window): Adjust users.

this module is never compiled otherwise.

  (Bug#15500).

 src/xdisp.c (get_next_display_element): Don't call face_for_font in
 a build configured --without-x.

condition.

Fixes: debbugs:15475

* frame.c (delete_frame): Record selected frame only after
calling Qdelete_frame_functions (Bug#15477).

* lisp/faces.el (region): Change ns_selection_color to
ns_selection_fg_color, add ns_selection_bg_color.

* src/nsterm.h (NS_SELECTION_BG_COLOR_DEFAULT): Renamed from
NS_SELECTION_COLOR_DEFAULT.
(NS_SELECTION_FG_COLOR_DEFAULT): New.

* src/nsterm.m (ns_selection_color): Remove.
(ns_get_color): Check for ns_selection_(fg|bg)_color using
NSColor selectedText(Background)Color.  Only for COCOA.
(ns_term_init): Remove assignment of ns_selection_color, logic
moved to ns_get_color.

 src/xdisp.c (Fdump_tool_bar_row): Ifdef away the body if 'struct
 frame' does not have the tool_bar_window member.

* lread.c (read1): signal error
* alloc.c (make_byte_code): eassert header size
(sweep_vectors): change an int to size_t

instead of ints, as it's the usual style for offsetof constants.  See:
http://lists.gnu.org/archive/html/emacs-devel/2013-09/msg00478.html

This is ugly, but it should fix the performance problem for older
GCC versions in the short run.  I'll look into integrating the
Gnulib module for popcount, as a better fix.
See the thread starting in:
http://lists.gnu.org/archive/html/emacs-devel/2013-09/msg00474.html
(popcount_size_t_generic) [NEED_GENERIC_POPCOUNT]:
(popcount_size_t_msc) [USE_MSC_POPCOUNT]:
(popcount_size_t_gcc) [USE_GCC_POPCOUNT]:
(popcount_size_t): Use it.

Prefer signed to unsigned integers where either will do.
No need for 'const' on locals that do not escape.
Omit easserts with unnecessary and unportable assumptions about
alignment.  Avoid unnecessary casts to char *.

This helps to avoid a few glitches dictated by C's aliasing rules.
* lisp.h (struct Lisp_Vector): Use union for next and
contents member.  Adjust comment.  Change related users.
* alloc.c (next_in_free_list, set_next_in_free_list): Remove.
Related users changed.
* buffer.c, bytecode.c, ccl.c, character.h, chartab.c, composite.c:
* composite.h, disptab.h, fns.c, fontset.c, indent.c, keyboard.c:
* lread.c, msdos.c, process.c, w32menu.c, window.c, xdisp.c:
* xfaces.c, xfont.c, xmenu.c: Related users changed.

* dispextern.h (struct glyph_row): Change layout of struct
glyph_row to help copy_row_except_pointers.  Adjust comment.
* dispnew.c (null_row): Remove.
(clear_glyph_row): Use offsetof and memset to find and clear
just the members that need clearing.  Adjust comment.
(copy_row_except_pointers): Likewise for copying.

* conf_post.h (assume): Always return void.  Use lint version
only if GCC and MSC versions don't apply.
* conf_post.h (assume):
* data.c (USC_MSC_POPCOUNT, count_trailing_zero_bits):
Depend on _MSC_VER, not __MSC_VER, for consistency with
the rest of Emacs.
* data.c (bool_vector_spare_mask, popcount_size_t_generic)
(popcount_size_t_msc, popcount_size_t_gcc, popcount_size_t)
(bool_vector_binop_driver, count_trailing_zero_bits)
(size_t_to_host_endian): Now static, not static inline;
the latter isn't needed with modern compilers and doesn't
work with older compilers anyway.

Remove ancient leftover.

(overlay_arrow_seen, message_enable_multibyte, line_number_displayed)
(display_last_displayed_message_p, message_buf_print)
(message_cleared_p, help_echo_showing_p, hourglass_shown_p):
Use bool for boolean.
* dispextern.h (help_echo_showing_p, hourglass_shown_p):
* lisp.h (noninteractive_need_newline): Adjust declaration.

Move to...
* frame.c (frame_garbaged, selected_frame, last_nonminibuf_frame):
...this file and convert the latter to static.  Adjust comment.
(make_initial_frame):
* window.c (init_window_once): Adjust user.
* frame.h (last_nonminibuf_frame): Remove declaration.
* lisp.h (selected_frame): Likewise.
* msdos.c (the_only_display_info): Adjust comment.

 src/xdisp.c (note_mouse_highlight): Adapt calculation of last argument to
 mouse_face_from_string_pos to the previous change.

Fixes: debbugs:15437

 src/xdisp.c (mouse_face_from_string_pos): Fix off-by-one error in
 computing the end column of mouse-highlight that comes from
 display or overlay strings.

 src/conf_post.h (__has_builtin): Define to zero, if undefined, on
 all platforms, not just for clang.

* configure.ac: With clang, check for and use -Wno-switch,
-Wno-tautological-constant-out-of-range-compare and -Wno-pointer-sign.

* conf_post.h(assume): Use __builtin_unreachable for clang.

* src/filelock.c (lock_file_1): Rearrange to remove compiler warning
about excess arguments to snprintf.

src/w32console.c (initialize_w32_display): Remove unused variable hlinfo.
src/w32term.c (w32_scroll_bar_handle_click): Remove unused variable f.

warings.

* alloc.c (USE_VALGRIND): New macro; on by default
when ENABLE_CHECKING.
(mark_maybe_object,mark_maybe_pointer)
[USE_VALGRIND]: Mark conservatively-scanned regions valid for
valgrind purposes.
(valgrind_p) [USE_VALGRIND]: New variable.
(init_alloc) [USE_VALGRIND]: Initialize valgrind_p.

* nsterm.m (setMarkedText:selectedRange:):
(deleteWorkingText):
* nsmenu.m (addDisplayItemWithImage:idx:tag:helpText:enabled:):
* nsfont.m (ns_get_covering_families, ns_findfonts): Cast NSLog
argument to unsigned long to avoid warning.
(nsfont_draw): Use 0.25 instead of  Fix2X (kATSItalicQDSkew).

* process.c (wait_reading_process_output): Change int pnamelen to
socklen_t.