Please note that for the time being castor/tape/CMakeLists.txt will not add
castor/tape/rmc/CMakeLists.txt as a subdirectory.  The line doing this is
currently commented out.  This is because the three following executables are
not yet part of an offcial CASTOR release:

    castor-tape-acs-dismount
    castor-tape-acs-mount
    castor-tape-acs-queryvolume