clearify status codes in ManagedExec()
clearify status codes in ManagedExec()

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