2005-05-09  Michael Natterer  <mitch@gimp.org>

	* app/widgets/Makefile.am
	* app/widgets/widgets-types.h
	* app/widgets/gimpcontrollerlist.[ch]: new widget which allows
	adding/removing controllers using two lists of available/active
	controllers. Work in progress...

	* app/widgets/gimpcontrollerinfo.[ch]: derive it from GimpVieable
	so it can have an icon (unfinished). Added convenience constructor
	gimp_controller_info_new().

	* app/dialogs/preferences-dialog.c: use a GimpControllerList
	instead of a notebook of GimpControllerEditors.