2003-05-03  Michael Natterer  <mitch@gimp.org>

	* app/widgets/gimpdockbook.[ch]: added "dockable_added",
	"dockable_removed" and "dockable_reordered" signals and emit them.

	* app/widgets/gimpimagedock.[ch]: implement GimpDock::book_added()
	and GimpDock::book_removed(). Connect to the above signals and
	update the window title as proposed in bug #111971. Idle-update
	the title so subsequent changes are compressed. Fixes bug #111971.

	* app/widgets/gimpdock.c: cleanup.