2004-01-29  Michael Natterer  <mitch@gimp.org>

	* app/core/gimpcontext.[ch]: removed the last artefact of context
	signal handling from 1.2:

	GimpContext used to connect to e.g. the current brush's
	"invalidate_preview" and "name_changed" signals and emitted
	"brush_changed" when the callback was invoked. This was needed to
	make 1.2 work, but is conceptually broken with the real model <->
	view approach implemented in the current code.
	This change also optimizes things quite a bit because lots of
	signal emissions are saved.

	Added utility function which finds a container's current object
	after a freeze/thaw.

	* app/widgets/gimpcontainerview.[ch]: added new virtual function
	GimpContainerView::rename_item(). Connect to "name_changed" of the
	corrent container's children and invoke rename_item() accordingly.

	* app/widgets/gimpcontainertreeview.[ch]: removed name_changed
	handler and implement GimpContainerView::rename_item().

	* app/widgets/gimpcontainergridview.c: ditto. the grid view was
	still relying on the removed GimpContext behaviour for updating
	the label showing the sleected item's name.