Update to SimplePie 1.3. props rmccue.

Uses individual files for each class. We now conditionally load only the pieces
we need, resulting in less memory usage. Also easier to maintain now that it is
not a single 387KB file.

fixes #21183.



git-svn-id: https://develop.svn.wordpress.org/trunk@21644 602fd350-edb4-49c9-b593-d223f7449a82

wp-includes/class-feed.php

@@ -10,7 +10,7 @@ class WP_Feed_Cache extends SimplePie_Cache {
 	 * @static
 	 * @access public
 	 */
-	function create($location, $filename, $extension) {
+	public static function create($location, $filename, $extension) {
 		return new WP_Feed_Cache_Transient($location, $filename, $extension);
 	}
 }