allow for history traversal until certain threshold
allow for history traversal until certain threshold

DrDaveD/cvmfs,DrDaveD/cvmfs,cvmfs/cvmfs,reneme/cvmfs,Gangbiao/cvmfs,MicBrain/cvmfs,alhowaidi/cvmfsNDN,reneme/cvmfs,cvmfs/cvmfs,DrDaveD/cvmfs,DrDaveD/cvmfs,Moliholy/cvmfs,alhowaidi/cvmfsNDN,DrDaveD/cvmfs,cvmfs/cvmfs,trshaffer/cvmfs,MicBrain/cvmfs,djw8605/cvmfs,alhowaidi/cvmfsNDN,cvmfs-testing/cvmfs,cvmfs-testing/cvmfs,Moliholy/cvmfs,MicBrain/cvmfs,reneme/cvmfs,cvmfs-testing/cvmfs,cvmfs-testing/cvmfs,trshaffer/cvmfs,trshaffer/cvmfs,Moliholy/cvmfs,Gangbiao/cvmfs,djw8605/cvmfs,Gangbiao/cvmfs,reneme/cvmfs,cvmfs/cvmfs,Gangbiao/cvmfs,reneme/cvmfs,cvmfs/cvmfs,alhowaidi/cvmfsNDN,trshaffer/cvmfs,trshaffer/cvmfs,MicBrain/cvmfs,Gangbiao/cvmfs,Moliholy/cvmfs,cvmfs-testing/cvmfs,cvmfs/cvmfs,DrDaveD/cvmfs,cvmfs/cvmfs,alhowaidi/cvmfsNDN,DrDaveD/cvmfs,djw8605/cvmfs,MicBrain/cvmfs,djw8605/cvmfs,djw8605/cvmfs,Moliholy/cvmfs