File _servicedata of Package yacoin

<servicedata>
  <service name="tar_scm">
    <param name="url">https://github.com/yacoin/yacoin.git</param>
    <param name="changesrevision">8462481892b78e515d0d8f61ccbc49d82a13de0c</param>
  </service>
</servicedata>