File _service of Package libvpx

<services>
  <service name="download_url">
    <param name="protocol">http</param>
    <param name="host">webm.googlecode.com</param>
    <param name="path">/files/libvpx-v0.9.6.tar.bz2</param>
  </service>
  <service name="verify_file">
    <param name="file">_service:download_url:libvpx-v0.9.6.tar.bz2</param>
    <param name="verifier">sha256</param>
    <param name="checksum">28bd8a8ef216fb570912f0d378668051d99681bf13735b59e68a12ad79f2aa73</param>
  </service>
</services>