ZF-9696 & ZF-8637, added data type $class in phpdoc.

git-svn-id: http://framework.zend.com/svn/framework/standard/trunk@22913 44c647ce-9c0f-0410-b52a-842ac1e357ba

library/Zend/Loader/Autoloader/Interface.php

@@ -34,7 +34,7 @@ interface Zend_Loader_Autoloader_Interface
      * Autoload a class
      *
      * @abstract
-     * @param   $class
+     * @param   string $class
      * @return  mixed
      *          False [if unable to load $class]
      *          get_class($class) [if $class is successfully loaded]