Refactor: make _repo_is_incompatible() 'protected'
Refactor: make _repo_is_incompatible() 'protected'

trshaffer/cvmfs,alhowaidi/cvmfsNDN,cvmfs/cvmfs,DrDaveD/cvmfs,djw8605/cvmfs,alhowaidi/cvmfsNDN,cvmfs/cvmfs,Moliholy/cvmfs,DrDaveD/cvmfs,Gangbiao/cvmfs,alhowaidi/cvmfsNDN,trshaffer/cvmfs,Moliholy/cvmfs,cvmfs/cvmfs,djw8605/cvmfs,trshaffer/cvmfs,Gangbiao/cvmfs,DrDaveD/cvmfs,cvmfs/cvmfs,DrDaveD/cvmfs,Gangbiao/cvmfs,Moliholy/cvmfs,reneme/cvmfs,trshaffer/cvmfs,DrDaveD/cvmfs,cvmfs/cvmfs,alhowaidi/cvmfsNDN,Gangbiao/cvmfs,cvmfs/cvmfs,trshaffer/cvmfs,djw8605/cvmfs,djw8605/cvmfs,DrDaveD/cvmfs,alhowaidi/cvmfsNDN,reneme/cvmfs,Moliholy/cvmfs,reneme/cvmfs,DrDaveD/cvmfs,reneme/cvmfs,Gangbiao/cvmfs,reneme/cvmfs,djw8605/cvmfs,Moliholy/cvmfs,cvmfs/cvmfs