2006-10-10  Morten Welinder  <terra@gnome.org>

	* src/application.c (gnm_app_clipboard_invalidate_sheet): New
	function.
	* src/clipboard.c (cellregion_invalidate_sheet): New function.
	* src/sheet.c (sheet_destroy): Use
	gnm_app_clipboard_invalidate_sheet.  Fixes #323811 in a brutal
	way.
	(sheet_destroy): Make static.