Update Kohana to 3.1.3.1

includes/kohana/modules/orm/classes/model/role.php

@@ -0,0 +1,7 @@
+<?php defined('SYSPATH') or die('No direct access allowed.');
+
+class Model_Role extends Model_Auth_Role {
+
+	// This class can be replaced or extended
+
+} // End Role Model