mailmap: Laurent Barbe affiliation

Reviewed-by: Laurent Barbe <laurent@ksperis.com>
Signed-off-by: Loic Dachary <loic@dachary.org>
mailmap: Rutger ter Borg affiliation

Reviewed-by: Rutger ter Borg <rutger@terborg.net>
Signed-off-by: Loic Dachary <loic@dachary.org>