* gtkutil.c (xg_mark_data): Use FRAME_X_P.
Improve event loop on NS so that no polling is used.

* nsmenu.m (popupSession): Remove.
(pop_down_menu): Remove endModalSession.
(timeout_handler:): New method.
(runDialogAt:): Get next timeout.  Start a NSTimer with that timeout.
Call runModalForWindow.  Check timer_fired when it returns.
If not set, cancel timer and break out of loop.
Otherwise loop again, with a new timeout.

* nsterm.h (EmacsApp): fd_handler takes id argument.
(EmacsDialogPanel): Add timer_fired and timeout_handler.

* nsterm.m: Include fcntl.h if present.
(fd_entry, t_readfds, inNsSelect): Remove.
(select_writefds, select_valid, select_timeout, selfds)
(select_mutex, apploopnr): Add.
(EV_TRAILER): Call kbd_buffer_store_event_hold only if q_event_ptr.
Otherwise call kbd_buffer_store_event.
(ns_send_appdefined): Remove release of fd_entry.
(ns_read_socket): Always send appdefined.  Remove inNsSelect check.
Increment and decrement apploopnr.
(ns_select): If no file descriptors, just do a NSTimer.
Otherwise copy read/write masks and start select thread (fd_handler).
Start main loop and wait for application defined event.
Inform select thread to stop selecting after main loop is exited.
(ns_term_init): Create selfds pipe and set non-blocking.
Initialize select_mutex. Start the select thread (fd_handler).
(fd_handler:): Loop forever, wait for info from the main thread
to either start or stop selecting.  When select returns, send
and appdefined event.
(sendScrollEventAtLoc:fromEvent:): Check if q_event_ptr is set.
If not call kbd_buffer_store_event.
* lisp/vc/vc-mtn.el (vc-mtn-revision-completion-table): Handle completion
for composite selectors.
* lisp/vc/vc.el (vc-diff-build-argument-list-internal): Don't prevent
operation just because we can't find a previous revision.
* src/eval.c (eval_sub): Bind lexical-binding.
* src/lread.c (Qlexical_binding): Make non-static.
Simple interface to set Lisp_Object fields of chararcter tables.
* lisp.h (CSET): New macro.
(char_table_set_extras, char_table_set_contents)
(sub_char_table_set_contents): New function.
* casetab.c, category.c, chartab.c, fns.c, fontset.c, search.c:
* syntax.c: Adjust users.
Make subword.el easier to customize (tiny change)

* lisp/progmodes/subword.el (subword-forward-function)
(subword-backward-function, subword-forward-regexp, subword-backward-regexp):
New variables.
(subword-forward, subword-forward-internal, subword-backward-internal):
Use new variables, eg so that different "word" definitions can be easily used.
For Xft and X font backends, set omitted max_width font fields.

* src/xfont.c (xfont_open):
* src/xftfont.c (xftfont_open): Set the font's max_width field.

* src/font.h (struct font): Update comments.
Fix average font width calculation on NS.

* src/nsfont.m (nsfont_open): Similar to the Xft backend, set
min_width to space_width and average_width to the average over
printable ASCII characters.
(ns_char_width): Code cleanup.
(ns_ascii_average_width): New utility function.
* gtkutil.c (xg_get_font): Demand an Xft font.
Fix previous char table change.
* lisp.h (CHAR_TABLE_SET): Use sub_char_table_set_contents.
* chartab.c (optimize_sub_char_table): Likewise.
Consistently check windows for validity/liveness (Bug#11984, Bug#12025, Bug#12026).

* lisp.h (CHECK_VALID_WINDOW): New macro.
* window.c (decode_window): Rename to decode_live_window.
(decode_valid_window, Fwindow_valid_p): New functions.
(Fwindow_frame, Fframe_root_window, Fwindow_minibuffer_p)
(Fframe_first_window, Fframe_selected_window, Fwindow_parent)
(Fwindow_top_child, Fwindow_left_child, Fwindow_next_sibling)
(Fwindow_prev_sibling, Fwindow_combination_limit)
(Fset_window_combination_limit, Fwindow_use_time)
(Fwindow_total_height, Fwindow_total_width, Fwindow_new_total)
(Fwindow_normal_size, Fwindow_new_normal, Fwindow_left_column)
(Fwindow_top_line, Fwindow_body_height, Fwindow_body_width)
(Fwindow_hscroll, Fset_window_hscroll)
(Fwindow_redisplay_end_trigger)
(Fset_window_redisplay_end_trigger, Fwindow_edges)
(Fwindow_pixel_edges, Fwindow_absolute_pixel_edges)
(Fwindow_inside_edges, Fwindow_inside_pixel_edges)
(Fcoordinates_in_window_p, Fwindow_point, Fwindow_start)
(Fwindow_end, Fset_window_point, Fset_window_start)
(Fpos_visible_in_window_p, Fwindow_line_height)
(Fwindow_dedicated_p, Fset_window_dedicated_p)
(Fwindow_prev_buffers, Fset_window_prev_buffers)
(Fwindow_next_buffers, Fwindow_parameters, Fwindow_parameter)
(Fset_window_parameter, Fwindow_display_table)
(Fset_window_display_table, Fdelete_other_windows_internal)
(Fset_window_buffer, Fset_window_new_total)
(Fset_window_new_normal, Fdelete_window_internal)
(Fwindow_text_height, Fset_window_margins, Fwindow_margins)
(Fset_window_fringes, Fwindow_fringes, Fset_window_scroll_bars)
(Fwindow_scroll_bars): Check whether argument window is a valid or
live window.  Update doc-strings.
(syms_of_window): New symbol Qwindow_valid_p.
* keyboard.c (Fposn_at_x_y): Check whether argument
frame_or_window denotes a valid window.
* window.el (window-valid-p): Move to window.c.
Auto-commit of generated files.
In window.el tell whether functions operate on valid, live or any windows.

* window.el (window-child, window-child-count, window-last-child)
(window-normalize-window, window-combined-p)
(window-combinations, window-atom-root, window-min-size)
(window-sizable, window-sizable-p, window-size-fixed-p)
(window-min-delta, window-max-delta, window--resizable)
(window--resizable-p, window-resizable, window-total-size)
(window-full-height-p, window-full-width-p, window-body-size)
(window-at-side-p, adjust-window-trailing-edge, maximize-window)
(minimize-window, window-deletable-p, delete-window)
(delete-other-windows, set-window-buffer-start-and-point)
(next-buffer, previous-buffer, split-window, balance-windows-2)
(set-window-text-height, window-buffer-height)
(fit-window-to-buffer, shrink-window-if-larger-than-buffer)
(truncated-partial-width-window-p): Minor code adjustments.  In
doc-strings state whether the argument window has to denote a
live, valid or any window.
Use ASCII tests for character types.

* admin/merge-gnulib (GNULIB_MODULES): Add c-ctype.
* lwlib/lwlib-Xaw.c, lwlib/lwlib.c, lwlib/xlwmenu.c:
Don't include <ctype.h>; no longer needed.
* lwlib/lwlib-Xaw.c (openFont):
* lwlib/xlwmenu.c (openXftFont): Test just for ASCII digits.
* src/category.c, src/dispnew.c, src/doprnt.c, src/editfns.c, src/syntax.c
* src/term.c, src/xfns.c, src/xterm.c:
Don't include <ctype.h>; was not needed.
* src/charset.c, src/doc.c, src/fileio.c, src/font.c, src/frame.c:
* src/gtkutil.c, src/image.c, src/sysdep.c, src/xfaces.c:
Include <c-ctype.h> instead of <ctype.h>.
* src/nsterm.m: Include <c-ctype.h>.
* src/charset.c (read_hex):
* src/doc.c (Fsnarf_documentation):
* src/fileio.c (IS_DRIVE) [WINDOWSNT]:
(DRIVE_LETTER) [DOS_NT]:
(Ffile_name_directory, Fexpand_file_name)
(Fsubstitute_in_file_name):
* src/font.c (font_parse_xlfd, font_parse_fcname):
* src/frame.c (x_set_font_backend):
* src/gtkutil.c (xg_get_font):
* src/image.c (xbm_scan, xpm_scan, pbm_scan_number):
* src/nsimage.m (hexchar):
* src/nsterm.m (ns_xlfd_to_fontname):
* src/sysdep.c (system_process_attributes):
* src/xfaces.c (hash_string_case_insensitive):
Use C-locale tests instead of locale-specific tests for character
types, since we want the ASCII interpretation here, not the
interpretation suitable for whatever happens to be the current locale.
* lib-src/makefile.w32-in ($(BLD)/regex.$(O)): Update dependencies.

* src/makefile.w32-in (C_CTYPE_H): New macro.
(LISP_H, $(BLD)/ccl.$(O), $(BLD)/doc.$(O), $(BLD)/w32console.$(O)):
($(BLD)/fontset.$(O), $(BLD)/frame.$(O), $(BLD)/composite.$(O)):
($(BLD)/sysdep.$(O), $(BLD)/w32uniscribe.$(O)): Update dependencies.
* nsfont.m (ns_ascii_average_width): Send initWithFormat selector
to an allocated instance of NSString, not to the class itself.
* lisp.h (duration_to_sec_usec): Remove unused decl.
Do not use memcpy for copying intervals.
* intervals.c (reproduce_interval): New function.
(reproduce_tree, reproduce_tree_obj): Use it.
(reproduce_tree_obj): Remove prototype.
Fix latest fix of delete-window.

* window.el (delete-window): Fix last fix.
Fix pty handling on FreeBSD 8.0  (tiny change)

* configure.ac (PTY_OPEN): Try posix_openpt on gnu-linux,
gnu-kfreebsd, freebsd, and netbsd.