use fros instead of hard dependency on recordmydesktop rhbz#958979

Signed-off-by: Jiri Moskovcak <jmoskovc@redhat.com>
Signed-off-by: Jakub Filak <jfilak@redhat.com>
spec: add dependency on fros rhbz#958979

Signed-off-by: Jiri Moskovcak <jmoskovc@redhat.com>
Signed-off-by: Jakub Filak <jfilak@redhat.com>