expose `cvmfs_attach_repo()` in libcvmfs.a
expose `cvmfs_attach_repo()` in libcvmfs.a

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