Convert CAS urls to new UNL Shib CAS urls.

library/Unl/Controller/Action/Authenticate.php

@@ -147,9 +147,9 @@ abstract class Unl_Controller_Action_Authenticate extends Unl_Controller_Action
                 $serviceUrl .= $_SERVER['SERVER_NAME'] . $path;
             }
 
-            $adapter = new Unl_Cas($serviceUrl, 'https://login.unl.edu/cas');
+            $adapter = new Unl_Cas($serviceUrl, 'https://shib.unl.edu/idp/profile/cas');
         }
         
         return $adapter;
     }
-}
\ No newline at end of file
+}