simplify stacktrace readout code
simplify stacktrace readout code

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