File _servicedata of Package v4l2loopback

<servicedata>
<service name="tar_scm">
                <param name="url">https://github.com/v4l2loopback/v4l2loopback.git</param>
              <param name="changesrevision">a7e4a4dea36187ad3550c797d647bcc50faced42</param></service></servicedata>