2003-08-27  Michael Natterer  <mitch@gimp.org>

	Cleaned up my "To Selection" cleanup:

	* app/gui/channels-commands.[ch]
	* app/gui/layers-commands.[ch]
	* app/gui/vectors-commands.[ch]: removed the separate
	cmd_callbacks for REPLACE,ADD,SUBTRACT,INTERSECT and pass the
	operation as "guint action" to the callback.

	* app/gui/channels-menu.c
	* app/gui/image-menu.c
	* app/gui/layers-menu.c
	* app/gui/vectors-menu.c: changed accordingly.