File _service of Package ImageMagick

<services>
  <service name="download_url"><param name="path">/pub/ImageMagick/ImageMagick.tar.gz</param><param name="host">ftp.imagemagick.org</param><param name="protocol">ftp</param></service>
<service name="recompress"><param name="file">_service:download_url:ImageMagick.tar.gz</param><param name="compression">bz2</param></service></services>