File _servicedata of Package libcamlpdf

<servicedata>
  <service name="tar_scm">
    <param name="url">https://github.com/johnwhitington/camlpdf.git</param>
    <param name="changesrevision">9fbc616483c7ba050fb678579ac4d9cd7295169c</param>
  </service>
</servicedata>