executing macro before appending to it (when used from Lisp).
(Fexecute_kbd_macro): Added LOOPFUNC argument to supply function
which is called prior to each iteration of macro (for kmacro.el).
(Fend_kbd_macro, Fcall_last_kbd_macro): Likewise.
(symbol_to_x_atom): Pay attention to QUTF8_STRING.
(x_atom_to_symbol): Likewise.
(x_get_local_selection): New argument local_request. If it is
nonzero, call handler_fn with the second arg nil.
(x_handle_selection_request): Call x_get_local_selection with
local_request 0.
(lisp_data_to_selection_data): Don't encode the string here.
(Fx_get_selection_internal): Call x_get_local_selection with
local_request 1.
(syms_of_xselect): Intern and staticpro QUTF8_STRING.
* macterm.c (XTmouse_position): Check wp with is_emacs_window.
(Vmac_pass_command_to_system): New variable.
(Vmac_pass_control_to_system): New variable.
(do_mouse_moved): Check wp with is_emacs_window.
(XTread_socket): Check window_ptr with is_emacs_window. Call
FrontNonFloatingWindow instead of FrontWindow. Send keydown
events back to Mac Toolbox for processing, depending on values of
Vmac_pass_command_to_system and Vmac_pass_control_to_system.
(syms_of_macterm): DEFVAR_LISP Vmac_pass_command_to_system and
Vmac_pass_control_to_system.
(malloc_widget_value, free_widget_value)
(w32_free_submenu_strings): Use them.
(push_submenu_start, push_submenu_end, push_left_right_boundary)
(push_menu_pane, push_menu_item, single_keymap_panes)
(single_menu_item, Fx_popup_menu, menubar_selection_callback)
(single_submenu, set_frame_menubar)
(w32_menu_show, w32_dialog_show): Use AREF, ASET, ASIZE.
(Fx_popup_menu): Don't show pop up menu until preceding one is
actually cleaned up. Moved UNGCPRO outside #ifdef HAVE_MENUS block.
Changes adapted from xmenu.c
(set_frame_menubar): First parse all submenus,
then make widget_value trees from them.
Don't allocate any widget_value objects
until we are done with the parsing.
(parse_single_submenu): New function.
(digest_single_submenu): New function.
(single_submenu): Function deleted, replaced by those two.
