Update the memcache reference to use the new cache PHP class.

core/menu/menu_item_edit.php

@@ -17,7 +17,7 @@
 
 	The Initial Developer of the Original Code is
 	Mark J Crane <[email protected]>
-	Portions created by the Initial Developer are Copyright (C) 2008-2014
+	Portions created by the Initial Developer are Copyright (C) 2008-2015
 	the Initial Developer. All Rights Reserved.
 
 	Contributor(s):