2003-11-17  Sven Neumann  <sven@gimp.org>

	* app/core/gimpviewable.[ch]: removed the unused GimpViewable
	parameter from gimp_viewable_calc_preview_size().

	* app/core/gimpbuffer.c
	* app/core/gimpimage-preview.c
	* app/core/gimpimagefile.c
	* app/core/gimpitem-preview.c
	* app/core/gimpundo.c
	* app/widgets/gimppreview.c
	* app/widgets/gimppreviewrendererdrawable.c
	* app/widgets/gimppreviewrendererimage.c: changed accordingly.

	* app/widgets/gimppreviewrenderer.[ch]: store the viewable_type in
	the preview renderer and use its default stock_id if no viewable
	is set.

	* app/core/gimpbrush.c
	* app/core/gimpbuffer.c
	* app/core/gimpgradient.c
	* app/core/gimppalette.c
	* app/core/gimppattern.c
	* app/core/gimpundo.c: set a default stock_id.