rename and simplify Digest::Hexifier
rename and simplify Digest::Hexifier

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