* keyboard.c (command_loop_1): Rebuild menu bar if

* keyboard.c (command_loop_1): Rebuild menu bar if
	update_mode_lines is set.

        Since Qmenu_enable is used by non-X-specific code, it shouldn't be
	defined in an X-only source file.
	* xmenu.c (Qmenu_enable): Definition moved...
	(syms_of_xmenu): ... along with initialization ...
	* keyboard.c (Qmenu_enable): ... to here ...
	(syms_of_keyboard): ... and here.

	* keyboard.c (kbd_buffer_get_event): If we get a selection clear
	or selection request event, but we were compiled without the
	window-system-specific code to handle it, abort.  Don't try to
	call a function which doesn't exist.

	* keyboard.c (make_lispy_event): In the code which processes mouse
	clicks, declare f to be a FRAME_PTR, not a struct frame *; this
	works when MULTI_FRAME is not #defined.