#731518 follow-up by Dave Reid: Include hook_token_alter() in the 'module.token.inc' group.

modules/system/system.module

@@ -251,6 +251,10 @@ function system_hook_info() {
   $hooks['tokens'] = array(
     'group' => 'tokens',
   );
+  $hooks['tokens_alter'] = array(
+    'group' => 'tokens',
+  );
+
   return $hooks;
 }