fix parsing of regular proxy list in presence of fallback proxies
fix parsing of regular proxy list in presence of fallback proxies

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