- Patch #164330 by Crell et al: restore menu classes.

includes/menu.inc

@@ -1050,7 +1050,9 @@ function menu_navigation_links($menu_name, $level = 0) {
       $l = $item['link']['options'];
       $l['href'] = $item['link']['href'];
       $l['title'] = $item['link']['title'];
-      $links[] = $l;
+      $l['attributes']['id'] = $item['link']['mlid'];
+      // Keyed with unique menu id to generate classes from theme_links().
+      $links['menu-'. $item['link']['mlid']] = $l;
     }
   }
   return $links;