In Kohana 2.4, ORM no longer does the find_all() call for us when we

retrieve related ORMs.  If we tack a find_all() on the end, it breaks
the User_Definition interface so create User_Model::groups() and
Groups_Model::users() as glue.

modules/user/models/user.php

@@ -61,6 +61,10 @@ class User_Model extends ORM implements User_Definition {
                    md5($this->email), $size, $default ? "&d=" . urlencode($default) : "");
   }
 
+  public function groups() {
+    return $this->groups->find_all();
+  }
+
   public function save() {
     if (!$this->loaded()) {
         $created = 1;