2005-03-24  Michael Natterer  <mitch@gimp.org>

	* app/core/core-enums.[ch]
	* app/core/gimpimage-undo-push.[ch]
	* app/core/gimplayermask.[ch]: eek, my fault... removed
	GIMP_UNDO_LAYER_MASK_EDIT stuff again because that just determines
	the active drawable, which must not affect undo.

	* app/pdb/pdb_glue.h
	* app/actions/layers-commands.c (layers_mask_edit_cmd_callback):
	changed accordingly.

	(layers_mask_disable_cmd_callback): reverted last change. the old
	code was correct.