[sfDoctrineGuardPlugin][1.0][1.1][1.2][trunk] fixed hasCredential() method to admit an anonymous user to have an empty credential list
[sfDoctrineGuardPlugin][1.0][1.1][1.2][trunk] fixed hasCredential() method to admit an anonymous user to have an empty credential list

git-svn-id: 2366f32a2a96aad12ae89ba1516f764a9f448195@15776 ee427ae8-e902-0410-961c-c3ed070cd9f9

agence-ATYPIC/sfDoctrineGuardPlugin