function viewvcUrlEngine($baseurl, $repository_name)
 {
     parent::webappUrlEngine($baseurl, $repository_name);
 }
 function tracUrlEngine($baseurl, $repository_name)
 {
     /* No repo name support */
     parent::webappUrlEngine($baseurl, $repository_name);
 }
 function websvnUrlEngine($baseurl, $repository_name)
 {
     parent::webappUrlEngine($baseurl, $repository_name);
 }