2003-03-11  Michael Natterer  <mitch@gimp.org>

	* app/core/gimpimagefile.c (gimp_imagefile_create_thumbnail),
	(gimp_imagefile_save_thumbnail)
	* app/gui/file-open-dialog.c (file_open_create_thumbnails): don't
	create thumbnails if core_config->layer_previews is FALSE
	(bug #107242).

	* app/file/file-save.c (file_save_as): call
	gimp_imagefile_save_thumbnail() unconditionally since it does all
	the needed checks itself.