GitLab

Run 'TZ=UTC0 admin/update-copyright $(git ls-files)'.

Run admin/update-copyright.

This catches some URLs I missed in my previous scan,
or perhaps were added after the scan.

* src/w32uniscribe.c (uniscribe_list_family):
* src/w32font.c (w32font_list_family, w32font_text_extents)
(w32font_list_internal, w32font_match_internal)
(list_all_matching_fonts): Prevent quitting while these functions
cons lists of fonts, to avoid leaving the critical section taken
by the main thread, which will then cause any other thread
attempting to enter the critical section to hang.  (Bug#25279)

Run admin/update-copyright.

All uses replaced by LISPSYM_INITIALLY.

* configure.ac [mingw32]: Don't add -Wpointer-sign, and add
-Wno-pointer-sign, to keep the noise level down.

* nt/mingw-cfg.site (gl_cv_warn_c__Wredundant_decls): Disable
-Wredundant-decls, as that produces a lot of noise due to
redeclaration of time-related functions by gnulib.
* nt/runemacs.c (set_user_model_id): Fix argument type of
'SetCurrentProcessExplicitAppUserModelID'.

* src/image.c (x_create_bitmap_from_file) [HAVE_NTGUI]: Don't
declare 'dpyinfo', as it is unused.
(xpm_load): Fix warnings about pointer signedness.
* src/w32proc.c (IsValidLocale, init_winsock): Remove redundant
prototypes.
(sys_spawnve): Avoid warnings about discarding 'const' qualifier.
(sys_select): Provide prototype.
(g_b_init_compare_string_w): Move declaration to file scope.
* src/w32heap.c (dumped_data_commit): Now static.
(FREEABLE_P): Avoid warnings about pointer comparison with integer.
(mmap_realloc): Cast to 'char *' for arithmetics on void pointers.
* src/w32console.c (ctrl_c_handler, sys_tputs, sys_tgetstr)
(evalcost, cmputc, cmcheckmagic, cmcostinit, cmgoto, Wcm_clear):
Provide prototypes.
* src/w32.c (globals_of_w32, conv_sockaddr_to_lisp): Remove
redundant prototypes.
(w32_get_internal_run_time, map_w32_filename): Provide prototype.
(init_environment, sys_ctime): Avoid warnings about discarding
'const' qualifier.
Include utimens.h.
(sys_ctime, sys_chdir, sys_creat, sys_fopen, sys_mkdir)
(sys_open, sys_rename, sys_rmdir, is_slow_fs, term_winsock)
(sys_close, sys_dup2, sys_read, sys_write, sys_localtime): Provide
prototypes.
(sys_rename_replace): Use %d to avoid compiler warnings.
(_wsa_errlist): Make the message text 'const char *', to avoid
compilation warnings.
(dynlib_reset_last_error): Move prototype to file scope.
(w32_get_resource): First argument is now 'const char *'.
* src/w32uniscribe.c (syms_of_w32uniscribe): Provide prototype.
(otf_features): Second argument is no 'const char *'.
* src/w32term.c (free_frame_menubar, x_wm_set_size_hint)
(x_set_window_size): Remove redundant prototypes.
(XChangeGC, XGetGCValues, w32_draw_underwave)
(w32_draw_rectangle, w32_shift_glyphs_for_insert, x_mouse_leave)
(x_calc_absolute_position, x_destroy_window): Now static.
(menubar_selection_callback): Move prototype to file scope.
* src/w32font.c (g_b_init_get_glyph_outline_w): Remove redundant
declaration.
(w32_to_x_charset): Fix warnings about discarding 'const' qualifier.
(w32font_full_name): Fix warnings about implicit conversion of
'float' to 'double'.
* src/w32reg.c (w32_get_rdb_resource): Fix warnings about
discarding 'const' qualifier.
* src/w32menu.c (syms_of_w32menu, globals_of_w32menu)
(set_frame_menubar): Remove redundant prototypes.
(menubar_selection_callback, w32_menu_display_help): Provide
prototypes.
(simple_dialog_show): Avoid warnings about discarding 'const'
qualifier.
* src/w32fns.c (syms_of_w32fns, globals_of_w32fns)
(free_frame_menubar, w32_strerror, x_set_menu_bar_lines)
(x_set_tool_bar_lines, x_set_internal_border_width): Remove
redundant prototypes.
(current_popup_menu): Remove redundant declaration.
(colormap_t): Member 'name' is now 'const char *'.
(add_system_logical_colors_to_map): Fix signed/unsigned warnings.
(x_decode_color, x_set_border_pixel)
(x_clear_under_internal_border, x_set_name, hook_w32_key)
(reset_w32_kbdhook_state, deliver_wm_chars, w32_backtrace): Now
static.
(w32_load_cursor, w32_key_to_modifier, map_keypad_keys)
(w32_msg_worker, w32_last_error): Provide prototypes.
(funhook, lookup_vk_code): Avoid warnings about missing
parentheses.
(x_default_font_parameter, Fw32_notification_notify): Avoid
warnings about discarding 'const' qualifier.
(Fx_create_frame): Avoid warnings about empty body of 'else'.
(x_screen_planes): Ifdef away unused function.
(Fx_show_tip): Remove unused variables.
(Fw32_battery_status): Avoid warnings about implicit promotion
from float to double.
(Fw32_notification_notify): Initialize 'timeout'.
* src/profiler.c (profiler_cpu_running) [HAVE_ITIMERSPEC]: Only
define the TIMER_SETTIME_RUNNING value if it will be used.
* src/w32notify.c (send_notifications): Ifdef away an empty if
clause.  Remove unused variable.
(watch_end, watch_completion): Provide prototypes.
* src/sound.c (sound_warning) [WINDOWSNT]: Don't define: unused.
* src/callproc.c (child_setup, getenv_internal_1) [WINDOWSNT]: Fix
warning with pointer signedness.
* src/gnutls.c (gnutls_x509_crt_get_signature)
(gnutls_alert_send_appropriate) [WINDOWSNT]: Don't define, and
don't load them from the GnuTLS library, as they are no longer
used.
* src/process.c (DATAGRAM_CHAN_P) [!DATAGRAM_SOCKETS]: Don't
define, as it's unused.
* src/unexw32.c (open_input_file, open_output_file)
(close_file_data): Remove redundant prototypes.
(_start): provide prototype.
(mainCRTStartup): Move prototype to file level.
(find_section): Use type-cast to shut up compiler warnings.
(offset_to_section, relocate_offset): Now static.
(find_section): First argument is now a 'const char *'.
(offset_to_section): Ifdef away, as it's unused.
* src/w32heap.h (find_section): Adjust prototype.
* src/dynlib.c (dynlib_reset_last_error): Provide prototype.
* src/dired.c (directory_files_internal_w32_unwind): Avoid
warnings about missing prototypes.
(is_slow_fs) [WINDOWSNT]: Provide prototype at file level.
(directory_files_internal) [WINDOWSNT]: Fix warnings about pointer
signedness.
* src/fileio.c (Ffile_writable_p, Ffile_regular_p) [WINDOWSNT]:
Fix warnings about pointer signedness.
* src/filelock.c (WTMP_FILE) [WINDOWSNT]: Don't define, it's
unused.
* src/sysdep.c (_getpid): Remove redundant prototype.
(sys_subshell) [DOS_NT]: Don't define 'status', it's unused.
[!MSDOS]: Don't define 'st', it's unused.
(init_sys_modes) [DOS_NT]: Don't define 'terminal', it's unused.
(str_collate) [WINDOWSNT]: Avoid warnings about pointer signedness.
* src/keyboard.c (tty_read_avail_input) [WINDOWSNT]: Don't define
n_to_read, as it is not used.
(MAX_ENCODED_BYTES) [WINDOWSNT]: Don't define, as it's unused.
* src/w32font.h (syms_of_w32font): Remove redundant prototype.
* src/xfaces.c (x_display_info) [HAVE_NTGUI]: Remove unused macro.
* src/term.c (init_tty) [DOS_NT]: Ifdef away variables that are
not used by DOS_NT builds, to avoid compiler warnings.
* src/menu.c (current_popup_menu) [HAVE_NTGUI]: Remove redundant
declaration.
* src/dispnew.c (init_display) [WINDOWSNT]: Use type-cast to shut
up compiler warnings.
* src/w32term.h (x_set_window_size, x_get_focus_frame)
(x_make_frame_visible, x_make_frame_invisible, x_iconify_frame)
(x_set_frame_alpha, x_activate_menubar, x_bitmap_icon)
(x_free_frame_resources, x_real_positions)
(display_x_get_resource): Remove redundant prototypes.

* lib-src/ntlib.c (sys_ctime, sys_fopen, sys_chdir, mkostemp)
(sys_rename, gettimeofday): Provide prototypes.
* lib-src/ntlib.h (getuid, geteuid, mkostemp): Remove redundant
declarations.
* lib-src/emacsclient.c (w32_getenv): Argument is now 'const char *'.
(xstrdup, w32_get_resource, w32_window_app, w32_execvp, ttyname)
(close_winsock, initialize_sockets, w32_set_user_model_id)
(w32_find_emacs_process, w32_give_focus) [WINDOWSNT]: Add
prototypes.
(w32_get_resource) [WINDOWSNT]: Fix a warning about signedness
difference.
(w32_set_user_model_id): Update prototype of
SetCurrentProcessExplicitAppUserModelID to avoid compiler
warnings.
(start_daemon_and_retry_set_socket) [WINDOWSNT]: Use type-cast to
shut up compiler warnings.
* lib-src/etags.c (MAXPATHLEN) [WINDOWSNT]: Remove unused macro.

Work around Bug#22884 by rewording comments and strings to avoid ‘(’
at the start of a line unless it starts a function.  This change
is a short-term hack; in the longer run we plan to fix cc-mode’s
performance for C files that have ‘(’ at the start of a line in a
comment or string.

Run admin/update-copyright.

* src/w32xfns.c: Don't include keyboard.h, window.h, charset.h,
fontset.h, blockinput.h.
* src/w32uniscribe.c: Don't include dispextern.h, character.h,
charset.h, fontset.h.
* src/w32term.c: Don't include systty.h, systime.h, charset.h,
character.h, ccl.h, dispextern.h, disptab.h, intervals.h,
process.h, atimer.h, keymap.h, w32heap.h.  Include bitmap/gray.xbm
in an ifdef-ed away block.
Include fcntl.h for CYGWIN.
(set_frame_param): Remove unused function.
* src/w32select.c: Don't include charset.h and composite.h.
(setup_config, Fw32_get_clipboard_data): Avoid compiler warnings
due to pointer signedness mismatches.
* src/w32reg.c (w32_get_string_resource): Avoid compiler warnings
due to pointer signedness mismatches.
* src/w32proc.c: Include unistd.h.  Don't include systime.h,
process.h, dispextern.h.
(sys_spawnve, Fw32_short_file_name, Fw32_long_file_name)
(Fw32_application_type): Avoid compiler warnings due to pointer
signedness mismatches.
* src/w32menu.c: Don't include keymap.h, termhooks.h, window.h,
character.h, charset.h, dispextern.h.
(simple_dialog_show, add_menu_item): Avoid compiler warnings due
to pointer signedness mismatches.
* src/w32inevt.c: Don't include dispextern.h, window.h,
termhooks.h, w32heap.h.
* src/w32font.c: Don't include dispextern.h, character.h,
charset.h, fontset.h, font.h.
(intern_font_name, add_font_entity_to_list)
(registry_to_w32_charset, w32_to_x_charset, fill_in_logfont)
(list_all_matching_fonts): Avoid compiler warnings due to pointer
signedness mismatches.
* src/w32fns.c: Don't include character.h, intervals.h,
dispextern.h, epaths.h, charset.h, ccl.h, fontset.h, systime.h,
termhooks.h, w32heap.h, bitmap/gray.xbm, font.h, w32font.h.
(w32_color_map_lookup, add_system_logical_colors_to_map)
(x_decode_color, x_set_name, FPRINTF_WM_CHARS, Fxw_color_defined_p)
(Fxw_color_values, x_display_info_for_name, Fset_message_beep)
(x_create_tip_frame, Fx_file_dialog, Fsystem_move_file_to_trash)
(w32_parse_hot_key, Ffile_system_info, w32_kbd_patch_key): Avoid
compiler warnings, mainly due to pointer signedness mismatches.
(unwind_create_frame_1): Remove unused function.
* src/w32console.c: Don't include character.h, disptab.h, frame.h,
window.h, termhooks.h, dispextern.h.
(w32con_write_glyphs, w32con_write_glyphs_with_face): Fix pointer
signedness mismatch.
* src/w32.c: Include c-strcase.h and systty.h.  Don't include
w32heap.h.

* src/w32fns.c (x_set_mouse_color): Comment out variables cursor,
nontext_cursor, mode_cursor, hand_cursor and count.
(x_change_tool_bar_height): Remove variable old_text_height.
(deliver_wm_chars): Remove variable strip_Alt.
(Fw32_shell_execute): Remove variable document_a.
(Fw32_frame_geometry): Remove variable fullboth.
* src/w32term.c (w32_setup_relief_color): Comment out variable
w32_display_info.
(w32_horizontal_scroll_bar_handle_click): Remove variables start, end.
(w32_read_socket): Comment out variables rows, columns.
* src/w32uniscribe.c (uniscribe_check_otf_1): Remove variable rest.

This removes the need for GCPRO1 etc.  Suggested by Stefan Monnier in:
http://lists.gnu.org/archive/html/emacs-devel/2015-08/msg00918.html
* doc/lispref/internals.texi (Writing Emacs Primitives):
* etc/NEWS:
Document the change.
* src/alloc.c (gcprolist, dump_zombies, MAX_ZOMBIES, zombies)
(nzombies, ngcs, avg_zombies, max_live, max_zombies, avg_live)
(Fgc_status, check_gcpros, relocatable_string_data_p, gc-precise):
* src/bytecode.c (mark_byte_stack) [BYTE_MARK_STACK]:
* src/eval.c (gcpro_level) [DEBUG_GCPRO]:
* src/lisp.h (struct handler.gcpro, struct gcpro, GC_MARK_STACK)
(GC_USE_GCPROS_AS_BEFORE, GC_MAKE_GCPROS_NOOPS)
(GC_MARK_STACK_CHECK_GCPROS, GC_USE_GCPROS_CHECK_ZOMBIES)
(BYTE_MARK_STACK, GCPRO1, GCPRO2, GCPRO3, GCPRO4, GCPRO5, GCPRO6)
(GCPRO7, UNGCPRO, RETURN_UNGCPRO):
Remove.  All uses removed.  The code now assumes
GC_MARK_STACK == GC_MAKE_GCPROS_NOOPS.
* src/bytecode.c (relocate_byte_stack):
Rename from unmark_byte_stack, since it now only relocates.
All callers changed.
* src/frame.c (make_frame): Add an IF_LINT to pacify GCC 5.2
with GCPROs removed.
* src/systime.h: Use EMACS_LISP_H as the canary instead of GCPRO1.
* test/automated/finalizer-tests.el (finalizer-basic)
(finalizer-circular-reference, finalizer-cross-reference)
(finalizer-error):
* test/automated/generator-tests.el (cps-test-iter-close-finalizer):
Remove tests, as they depend on gc-precise.

* src/w32uniscribe.c (_WIN32_WINNT): Define to 0x0600.  This is a
cleaner fix for Bug#21260 than the previous change.

* src/w32uniscribe.c (UNISCRIBE_OPENTYPE): Define to 0x0100, for
MinGW64.  Reported by Andy Moreton <andrewjmoreton@gmail.com>.
(Bug#21260)

* src/w32uniscribe.c (uniscribe_otf_capability): Add commentary
about the expected results and why the new Uniscribe APIs are not
used in this function.
(ScriptGetFontScriptTags_Proc, ScriptGetFontLanguageTags_Proc)
(ScriptGetFontFeatureTags_Proc): New function typedefs.
(uniscribe_new_apis): New static variable.
(uniscribe_check_features): New function, implements OTF features
verification while correctly accounting for features in the list
after the nil member, if any.
(uniscribe_check_otf_1): New function, retrieves the features
supported by the font for the requested script and language using
the Uniscribe APIs available from Windows Vista onwards.
(uniscribe_check_otf): If the new Uniscribe APIs are available,
use them in preference to reading the font data directly.  Call
uniscribe_check_features to verify that the requested features are
supported, replacing the original incomplete code.
(syms_of_w32uniscribe): Initialize function pointers for the new
Uniscribe APIs.  (Bug#21260)
(otf_features): Scan the script, langsys, and feature arrays back
to front, so that the result we return has them in alphabetical
order, like ftfont.c does.
* src/w32fns.c (syms_of_w32fns) <w32-disable-new-uniscribe-apis>:
New variable for debugging w32uniscribe.c code.

 src/w32uniscribe.c (uniscribe_list, uniscribe_match): Use bool where
 appropriate.
 src/w32font.c (struct font_callback_data, w32font_list_internal)
 (w32font_driver, w32font_match_internal): Use bool where appropriate.
 src/w32menu.c (x_activate_menubar, set_frame_menubar)
 (w32_dialog_show, initialize_frame_menubar, w32_menu_show)
 (is_simple_dialog): Use bool where appropriate.

* font.h (FONTP, FONT_SPEC_P, FONT_ENTITY_P, FONT_OBJECT_P)
(CHECK_FONT, CHECK_FONT_SPEC, CHECK_FONT_ENTITY, CHECK_FONT_OBJECT)
(XFONT_SPEC, XFONT_ENTITY, XFONT_OBJECT, CHECK_FONT_GET_OBJECT):
Now functions.
* font.c (Ffont_otf_alternates, Fquery_font, Ffont_get_glyphs):
* ftfont.c (ftfont_shape):
* macfont.m (macfont_shape):
* w32uniscribe.c (uniscribe_shape):
* xftfont.c (xftfont_shape): Adjust CHECK_FONT_GET_OBJECT users.

 src/w32proc.c, src/w32.h, src/w32fns.c, src/w32font.c, src/w32menu.c:
 src/w32notify.c, src/w32proc.c, src/w32select.c, src/w32term.c:
 src/w32uniscribe.c: Remove declarations of Q* variables that
 represent symbols.

Run admin/update-copyright.

Run admin/update-copyright.

 src/w32term.h (ALIGN_STACK) [__GNUC__]: Define to
 __attribute__((force_align_arg_pointer)) for GCC 4.2 and later.
 src/lisp.h (USE_STACK_LISP_OBJECTS): Remove the !DOS_NT condition.
 src/w32proc.c (enum_locale_fn, enum_codepage_fn): Add the
 ALIGN_STACK attribute.
 src/w32fns.c (w32_monitor_enum): Add the ALIGN_STACK attribute.
 src/w32uniscribe.c (add_opentype_font_name_to_list): Add the
 ALIGN_STACK attribute.
 src/w32font.c (add_font_name_to_list, add_font_entity_to_list)
 (add_one_font_entity_to_list): Add the ALIGN_STACK attribute.

* font.h (struct font_driver): Convert text_extents to
return void because returned value is never actually used.
* macfont.c (macfont_text_extents):
* w32font.c (w32font_text_extents):
* xftfont.c (xftfont_text_extents): Adjust to return void
and assume that 'metrics' argument is always non-NULL.
* ftfont.c (ftfont_text_extents):
* xfont.c (xfont_text_extents): Likewise.  Avoid redundant memset.

* font.h (enum font_property_index): Remove FONT_ENTITY_INDEX (no
users) and FONT_FORMAT_INDEX (set by a few font drivers but never
really used).
(FONT_ENTITY_NOT_LOADABLE, FONT_ENTITY_SET_NOT_LOADABLE): Remove;
unused.
* ftfont.h (ftfont_font_format): Remove prototype.
* ftfont.c (ftfont_font_format): Remove; now unused.
(ftfont_open):
* nsfont.m (nsfont_open):
* w32font.c (w32font_open_internal):
* w32uniscribe.c (uniscribe_open):
* xfont.c (xfont_open):
* xftfont.c (xftfont_open): All users changed.

not used by any font driver.
* ftfont.c (ftfont_driver):
* macfont.m (macfont_driver):
* nsfont.m (nsfont_driver):
* w32font.c (w32font_driver):
* w32uniscribe.c (uniscribe_font_driver):
* xfont.c (xfont_driver): Related users changed.
* xselect.c (x_get_window_property): Use convenient xmalloc.
Call to xfree only if some data was really allocated.

 src/w32term.c (w32_initialize): Declare the argument of
 set_user_model as const.
 src/w32menu.c <MessageBoxW_Proc>: Fix argument declarations.
 (w32_menu_show): Constify some arguments passed to MessageBox.
 src/w32uniscribe.c (uniscribe_font_driver): Use LISP_INITIALLY_ZERO
 to initialize Lisp objects.
 src/w32font.c (w32font_driver): Use LISP_INITIALLY_ZERO to
 initialize Lisp objects.
 src/frame.c (x_set_frame_parameters) [HAVE_X_WINDOWS]: Declare and
 use variables used only on X under that condition.
 src/fileio.c (Fcopy_file) [!WINDOWSNT]: Don't declare on Windows
 variables not used there.

 src/w32uniscribe.c (uniscribe_close): Adjust the argument list to
 the changed signature of the font driver's 'close' method.

 src/w32font.h (w32font_close): Adjust the prototype to the change in
 function definition.
 src/w32font.c (w32font_close): Reintroduce deleted declaration of i.
 src/w32uniscribe.c (uniscribe_close): Adapt the call to
 w32font_close to its new prototype.

* composite.c, font.c, font.h, fontset.c, fontset.h, frame.c, frame.h:
* ftfont.c, ftxfont.c, gtkutil.c, gtkutil.h, image.c, keyboard.c:
* menu.c, menu.h, msdos.c, nsfns.m, nsfont.m, nsmenu.m, nsterm.h:
* nsterm.m, scroll.c, term.c, w32fns.c, w32font.c, w32font.h:
* w32inevt.c, w32inevt.h, w32menu.c, w32notify.c, w32term.c, w32term.h:
* w32uniscribe.c, w32xfns.c, widget.c, window.c, xdisp.c, xfaces.c:
* xfns.c, xfont.c, xftfont.c, xmenu.c, xselect.c, xterm.c:
All related users changed.

* w32font.h (w32font_list_internal, w32font_match_internal):
Fix prototype.
* w32uniscribe.c (uniscribe_list, uniscribe_match):
(uniscribe_list_family): Adjust to match font API change.
MS-Windows breakage reported by Juanma Barranquero <lekktu@gmail.com>
at http://lists.gnu.org/archive/html/emacs-devel/2013-08/msg00006.html.

* ftfont.c (ftfont_shape_by_flt): Likewise.
* w32uniscribe.c (uniscribe_shape): Likewise.

* alloc.c (Fvector, Fmake_byte_code):
* ccl.c (Fregister_ccl_program):
* charset.c (Fdefine_charset_internal, define_charset_internal):
* coding.c (make_subsidiaries, Fdefine_coding_system_internal):
* composite.c (syms_of_composite):
* font.c (Fquery_font, Ffont_info, syms_of_font):
* fontset.c (FONT_DEF_NEW, Fset_fontset_font):
* ftfont.c (ftfont_shape_by_flt):
* indent.c (recompute_width_table):
* nsselect.m (clean_local_selection_data):
* syntax.c (init_syntax_once):
* w32unsubscribe.c (uniscribe_shape):
* window.c (Fcurrent_window_configuration):
* xfaces.c (Fx_family_fonts):
* xselect.c (selection_data_to_lisp_data): Use it.

Fix MS-Windows build broken by 2012-09-15T07:06:56Z!eggert@cs.ucla.edu, completing fix for bug #12446.

 src/w32xfns.c:
 src/w32uniscribe.c:
 src/w32term.c:
 src/w32select.c:
 src/w32reg.c:
 src/w32proc.c:
 src/w32menu.c:
 src/w32inevt.c:
 src/w32heap.c:
 src/w32font.c:
 src/w32fns.c:
 src/w32console.c:
 src/w32.c:
 src/w16select.c: Remove inclusion of setjmp.h, as it is now included
 by lisp.h.  This completes removal of setjmp.h inclusion
 erroneously announced in the previous commit.
 src/lisp.h [!HAVE__SETJMP, !HAVE_SIGSETJMP]: Make the commentary
 more accurate.
 src/image.c (_setjmp) [!HAVE__SETJMP]: Define only if 'setjmp' is
 not defined as a macro.  The latter happens on MS-Windows.

 src/w32uniscribe.c (uniscribe_shape): Reverse the sign of
 offsets[j].dv, since the y axis of the screen coordinates points
 down, while the y axis of the font definition coordinates points
 up.  This fixes display of Arabic diacritics such as KASRA and
 KASRATAN.

 src/w32uniscribe.c (uniscribe_shape): Handle correctly the case of
 more than one grapheme cluster passed to the shaper: compute the
 offset adjustment values separately for each cluster.

 src/w32uniscribe.c (uniscribe_shape): Fix producing gstring
 components for RTL text.  Adjust X-OFFSET of each non-base glyph
 for the width of the base character, according to what
 x_draw_composite_glyph_string_foreground expects.  Generate
 WADJUST value according to composition_gstring_width's
 expectations, to produce correct width of the composed character.
 Reverse the sign of the DU offset produced by ScriptPlace.

* admin/coccinelle/xzalloc.cocci: Semantic patch to convert
calls to xmalloc with following memset to xzalloc.
* src/lisp.h (xzalloc): New prototype.  Omit needless casts.
* src/alloc.c (xzalloc): New function.  Omit needless casts.
* src/charset.c: Omit needless casts.  Convert all calls to
malloc with following memset to xzalloc.
* src/dispnew.c: Likewise.
* src/fringe.c: Likewise.
* src/image.c: Likewise.
* src/sound.c: Likewise.
* src/term.c: Likewise.
* src/w32fns.c: Likewise.
* src/w32font.c: Likewise.
* src/w32term.c: Likewise.
* src/xfaces.c: Likewise.
* src/xfns.c: Likewise.
* src/xterm.c: Likewise.
* src/atimer.c: Omit needless casts.
* src/buffer.c: Likewise.
* src/callproc.c: Likewise.
* src/ccl.c: Likewise.
* src/coding.c: Likewise.
* src/composite.c: Likewise.
* src/doc.c: Likewise.
* src/doprnt.c: Likewise.
* src/editfns.c: Likewise.
* src/emacs.c: Likewise.
* src/eval.c: Likewise.
* src/filelock.c: Likewise.
* src/fns.c: Likewise.
* src/gtkutil.c: Likewise.
* src/keyboard.c: Likewise.
* src/lisp.h: Likewise.
* src/lread.c: Likewise.
* src/minibuf.c: Likewise.
* src/msdos.c: Likewise.
* src/print.c: Likewise.
* src/process.c: Likewise.
* src/region-cache.c: Likewise.
* src/search.c: Likewise.
* src/sysdep.c: Likewise.
* src/termcap.c: Likewise.
* src/terminal.c: Likewise.
* src/tparam.c: Likewise.
* src/w16select.c: Likewise.
* src/w32.c: Likewise.
* src/w32reg.c: Likewise.
* src/w32select.c: Likewise.
* src/w32uniscribe.c: Likewise.
* src/widget.c: Likewise.
* src/xdisp.c: Likewise.
* src/xmenu.c: Likewise.
* src/xrdb.c: Likewise.
* src/xselect.c: Likewise.