added command history to the shell. Up Arrow works
added command history to the shell. Up Arrow works

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