Utilities: parseQueryString should be static.

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@741 44740490-163a-0410-bde0-09ae8108e29a

lib/SimpleSAML/Utilities.php

@@ -1133,7 +1133,7 @@ class SimpleSAML_Utilities {
 	 * @param $query_string  The query string which should be parsed.
 	 * @return The query string as an associative array.
 	 */
-	public function parseQueryString($query_string) {
+	public static function parseQueryString($query_string) {
 		assert('is_string($query_string)');
 
 		$res = array();