File _servicedata of Package libsigmf

<servicedata>
<service name="tar_scm">
                <param name="url">https://github.com/deepsig/libsigmf.git</param>
              <param name="changesrevision">8ac7dbcb998bb8dcbbecc9bc0e5445eb8fce6a20</param></service></servicedata>