patch from Fritz to avoid the 'single sign out' method from causing problems when dealing with file upload requests
patch from Fritz to avoid the 'single sign out' method from causing problems when dealing with file upload requests

see: http://groups.google.com/group/rubycas-server/browse_thread/thread/b8291f413cd1aba0?hl=en

git-svn-id: fc1d17544eccfe202ae1d1676884b79d43544425@161 e5935e18-7a1f-0410-a9c8-d10ac5b774bc

identification-io/rubycas-client,CruGlobal/ccc_rubycas_client,desaperados/rubycas-client,jorahood/rubycas-client,geo767/rubycas-client,Windermere/rubycas-client,angjunwen/rubycas-client,rubycas/rubycas-client,jamesarosen/rubycas-client,lsylvester/rubycas-client,angjunwen/rubycas-client