DEVELOPERS: add Gilles Talis for libosip2 and libeXosip2
Signed-off-by: Gilles Talis <gilles.talis@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
(cherry picked from commit 1ce85392d051f86d32c2f34036a9f99466bcc184)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>