File _servicedata of Package gramps

<servicedata>
  <service name="tar_scm">
    <param name="url">https://github.com/gramps-project/gramps.git</param>
    <param name="changesrevision">7b4b8b52179ab914f31d1e6f308f69e1400726ac</param>
  </service>
</servicedata>