File _service of Package zxing-cpp-opt

<services>
  <service name="tar_scm">
    <param name="url">https://github.com/zxing-cpp/zxing-cpp.git</param>
    <param name="scm">git</param>
    <param name="exclude">.git</param>
    <param name="revision">v2.3.0</param>
    <param name="filename">zxing-cpp-opt</param>
    <param name="versionprefix">2.3.0</param>
  </service>
  <service name="set_version"/>
  <service name="recompress">
    <param name="file">*.tar</param>
    <param name="compression">gz</param>
  </service>
</services>