Update for DirectFB, DirectFB.3723, GraphicsMagi... recommended
This recommended update for argyllcms fixes the following issues:
- Add argyllcms.changes to Source, used to compute timestamp
- Use a stable timestamp for generated files (boo#916158), ensuring build is reproducible.
- Move reference files to /usr/share/argyll/ref, expected path from gnome-color-manager (bsc#914679).
- Submitted by Frederic Crozat (fcrozat)