File _servicedata of Package libxtrx

<servicedata>
<service name="tar_scm">
                <param name="url">https://github.com/xtrx-sdr/libxtrx.git</param>
              <param name="changesrevision">acb0b1cf7ab92744034767a04c1d4b4c281b840f</param></service></servicedata>