enforce handle_hardlinks_ in related methods
enforce handle_hardlinks_ in related methods

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