File _service of Package librtmp

<services>
  <service name="tar_scm">
    <param name="scm">git</param>
    <param name="url">https://git.ffmpeg.org/rtmpdump.git</param>
    <param name="revision">master</param>
    <param name="filename">rtmpdump</param>
    <param name='versionformat'>%ci</param>
    <param name="versionprefix">2.4</param>
    <param name="changesgenerate">enable</param>
  </service>
  <service name="recompress">
    <param name="file">*tar</param>
    <param name="compression">xz</param>
  </service>
  <service name="set_version"/>
</services>