File _servicedata of Package bitcoingold

<servicedata>
  <service name="tar_scm">
    <param name="url">https://github.com/btcgpu/btcgpu.git</param>
    <param name="changesrevision">f807b9ca29ddf4ac892b722dd5ccb53fc74e259d</param>
  </service>
</servicedata>