Doc: explain order dependency of SQLite3 calls
Doc: explain order dependency of SQLite3 calls

alhowaidi/cvmfsNDN,alhowaidi/cvmfsNDN,DrDaveD/cvmfs,DrDaveD/cvmfs,Moliholy/cvmfs,Moliholy/cvmfs,reneme/cvmfs,alhowaidi/cvmfsNDN,reneme/cvmfs,trshaffer/cvmfs,reneme/cvmfs,Gangbiao/cvmfs,djw8605/cvmfs,Gangbiao/cvmfs,Gangbiao/cvmfs,cvmfs/cvmfs,Moliholy/cvmfs,DrDaveD/cvmfs,cvmfs/cvmfs,DrDaveD/cvmfs,reneme/cvmfs,Moliholy/cvmfs,djw8605/cvmfs,Gangbiao/cvmfs,trshaffer/cvmfs,alhowaidi/cvmfsNDN,reneme/cvmfs,cvmfs/cvmfs,DrDaveD/cvmfs,alhowaidi/cvmfsNDN,djw8605/cvmfs,trshaffer/cvmfs,cvmfs/cvmfs,trshaffer/cvmfs,cvmfs/cvmfs,cvmfs/cvmfs,DrDaveD/cvmfs,djw8605/cvmfs,trshaffer/cvmfs,Gangbiao/cvmfs,djw8605/cvmfs,DrDaveD/cvmfs,Moliholy/cvmfs,cvmfs/cvmfs