Contribs: take latest x264 stable
Contribs: take latest x264 stable

(cherry picked from commit b0b848e12a5ac3a9a051a2e6ee2815ac0844c5f3)
Signed-off-by: Jean-Baptiste Kempf <7b85a41a628204b76aba4326273a3ccc74bd009a@videolan.org>

jomanmuk/vlc-2.2,jomanmuk/vlc-2.2,jomanmuk/vlc-2.2,jomanmuk/vlc-2.2,jomanmuk/vlc-2.2,jomanmuk/vlc-2.2,jomanmuk/vlc-2.2