2005-01-31  Michael Natterer  <mitch@gimp.org>

	Some cleanup to make plug-in menu creation less hackish and
	finally enable registering plug-in menu entries in much more UI
	managers (not only in the image and toolbox menus):

	* app/menus/menus.c: added a <Toolbox> UI manager instead of
	creating the toolbox menu from the <Image> UI manager.

	* app/widgets/gimpimagedock.[ch]: removed the ui_manager and the
	signal connections to update it...

	* app/widgets/gimpdock.[ch]: ...and added them here so all docks
	have their own UI manager. Determine which manager to create from
	looking at GimpDockClass::ui_manager_name (defaults to <Dock>).

	* app/widgets/gimptoolbox.c: set ui_manager_name to <Toolbox> and
	use the UI manager created by our parent class instead of using
	the <Image> one.

	(toolbox_create_tools): use gimp_action_get_accel_closure()
	instead of doing evil hacks.

	* app/gui/gui-vtable.c
	* app/menus/plug-in-menus.c: removed lots of special casing of the
	<Image> UI manager. The code is almost ready for allowing plug-in
	menus under <Layers>, <Channels>, <Brushes> etc.