[TARGET_API_MAC_CARBON] (menu_target_item_handler):

[TARGET_API_MAC_CARBON] (menu_target_item_handler):
Don't call next handler.
[TARGET_API_MAC_CARBON] (install_menu_target_item_handler):
Remove argument.  Install handler to application.
(set_frame_menubar): Don't change deep_p.
(mac_menu_show):  Use FRAME_OUTER_TO_INNER_DIFF_X and
FRAME_OUTER_TO_INNER_DIFF_Y.
(DIALOG_BUTTON_COMMAND_ID_OFFSET, DIALOG_BUTTON_COMMAND_ID_P)
(DIALOG_BUTTON_COMMAND_ID_VALUE, DIALOG_BUTTON_MAKE_COMMAND_ID)
[HAVE_DIALOGS]: New macros.
[HAVE_DIALOGS] (mac_handle_dialog_event, create_and_show_dialog):
Use them.
(fill_menubar) [TARGET_API_MAC_CARBON]: Use CFString.