Add default handlers for all signals; for consistency and for the benefit

Add default handlers for all signals; for consistency and for the benefit

Thu Feb 19 01:39:30 2004  Matthias Clasen  <maclas@gmx.de>

	* gtk/gtkuimanager.h:
	* gtk/gtkuimanager.c (gtk_ui_manager_class_init): Add
	default handlers for all signals; for consistency and for the
	benefit of language bindings which still rely on header parsing
	to find the signals.  (#134269, Jeroen Zwartepoorte)