2003-03-16  Michael Natterer  <mitch@gimp.org>

	Added GtkTreeView versions of layers/channels/vectors:

	* app/core/core-enums.[ch]: renamed GIMP_UNDO_GROUP_LAYER_PROPERTIES
	to GIMP_UNDO_GROUP_ITEM_PROPERTIES.

	* app/core/gimpcontainer.c (gimp_container_reorder): don't try
	to reorder containers with num_children == 1.

	* app/core/gimpmarshal.list: added VOID: STRING, UINT marshaller.

	* app/widgets/Makefile.am
	* app/widgets/widgets-types.h
	* app/widgets/gimpchanneltreeview.[ch]
	* app/widgets/gimpdrawabletreeview.[ch]
	* app/widgets/gimpitemtreeview.[ch]
	* app/widgets/gimplayertreeview.[ch]
	* app/widgets/gimpvectorstreeview.[ch]: new widgets.

	* app/widgets/gimpcellrenderertoggle.c: draw the frame only if the
	cell is prelit.

	* app/widgets/gimpcellrendererviewable.[ch]: added "clicked"
	signal, unref the renderer in finalize(). Set the renderer's
	border color to black if the cell is not selected (a hack that
	saves tons of code in GimpLa...