File _service of Package gc

<services>
  <service name="tar_scm" mode="disabled">
    <param name="url">https://github.com/bdwgc/bdwgc.git</param>
    <param name="scm">git</param>
    <param name="versionformat">8.3.0~%ci</param>
    <param name="revision">6d068ea3fa8191f252a8ca4910e0bd3cbb877d0f</param>
    <param name="filename">gc</param>
  </service>
  <service name="recompress" mode="disabled">
    <param name="file">*.tar</param>
    <param name="compression">xz</param>
  </service>
  <service name="set_version" mode="disabled"/>
</services>