File _service of Package xbs

<services>
  <service name="tar_scm">
    <param name="version">0.8</param>
    <param name="url">https://github.com/dmt4/xbs.git</param>
    <param name="scm">git</param>
  </service>
  <service name="recompress">
    <param name="file">*.tar</param>
    <param name="compression">xz</param>
  </service>
</services>