2004-09-25  Michael Natterer  <mitch@gimp.org>

	* app/widgets/gimpcolormapeditor.[ch]
	* app/widgets/gimphistogrameditor.[ch]
	* app/widgets/gimpselectioneditor.[ch]: removed redundant "gimage"
	parameters from public constructors. They are all GimpImageEditor
	widgets which get their image via gimp_docked_set_context() and
	gimp_image_editor_set_image() later anyway. Fixes uglyness as well
	as problems where the editors had an image but no context, causing
	strange behavior in their foo_actions_update() functions.

	* app/dialogs/dialogs-constructors.c: changed accordingly. Removed
	redundant calls to gimp_dockable_set_context() on newly created
	dockables because they will get a context when added to their
	containers.