add ip validator in form system, for now only for ipv4

fantu

2008-12-20 3ae3d88a8789ad1d0f6f92cab1112d9477cc71a7

 interface/lib/classes/listform_actions.inc.php

@@ -132,7 +132,7 @@
   }
   
   
   private function onShow()
   public function onShow()
    {
      global $app;