2005-03-25  Sven Neumann  <sven@gimp.org>

	* app/widgets/gimpview.[ch]: virtualized GimpView::set_viewable.

	* app/widgets/gimptoolbox-image-area.c: hook into "set_viewable"
	and add an XDS drag source.

	* app/widgets/gimpdnd-xds.c
	* app/widgets/gimpdnd.c: unset the XdndDirectSave0 property when
	the drag ends, minor cleanups.