merge latest smallhash.h from smallhash branch
merge latest smallhash.h from smallhash branch

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