(Fx_popup_menu): unwind protect cleanup_popup_menu in case
mac_menu_show Quit:s.
(mac_menu_show): Quit on cancel if not popped up on click (i.e.
a dialog).
increase size of buf, as it effectively uses twice the necessary
space on the stack. Instead, pre-allocate buf of full size, and
gradually increase the read size.
(mode_line_noprop_ptr): Rename from frame_title_*.
(store_mode_line_noprop_char): Rename from store_frame_title_char.
(store_mode_line_noprop): Rename from store_frame_title.
(mode_line_target): New enum to specify current output target
for mode line formatting.
(display_mode_element): Test it rather than frame_title_ptr and
mode_line_string_list to determine where output should go.
(mode_line_proptrans_alist, mode_line_string_alist): Make static.
(Vmode_line_unwind_vector): New variable.
(format_mode_line_unwind_data, unwind_format_mode_line): New
functions for unwind protection in mode line formatting.
(x_consider_frame_title): Use them and new local var 'title_start'
to support nested calls to format-mode-line. Set mode_line_target
to MODE_LINE_TITLE.
(Fformat_mode_line): Use them and new local var 'string_start' to
support nested calls to format-mode-line. Set mode_line_target to
MODE_LINE_NOPROP or MODE_LINE_STRING. Don't trim trailing dashes.
(decode_mode_spec): Don't make infinite number of trailing dashes
for MODE_LINE_NOPROP and MODE_LINE_STRING targets.
(syms_of_xdisp): Initialize and staticpro mode_line_string_face,
mode_line_string_face_prop, and Vmode_line_unwind_vector.
(init_xdisp): Initialize mode_line_noprop_ptr to start of _buf.
Initialize mode_line_target to MODE_LINE_DISPLAY.
length 4, not 3.
(ccl_get_compiled_code): New arg idx. Caller changed. Adjusted
for the change of Vccl_program_table.
(setup_ccl_program): Adjusted for the change of
Vccl_program_table.
(check_ccl_update): New function.
(Fregister_ccl_program): Use ASET to set an element of a vector.
Adjusted for the change of Vccl_program_table.
