Handle servers that advertise more than one auth method.
Handle servers that advertise more than one auth method.

git-svn-id: 1c032ccab86ccfbd91a527b68be6efa4b7c92a66@2941 e27351fd-9f3e-4f54-a53b-843176b1656c

RavuAlHemio/python-kerberos,RavuAlHemio/python-kerberos,RavuAlHemio/python-kerberos