changes in libvlc validation (cherry picked from commit 40870a19af35c114a46603da8380d553303bbce6)
changes in libvlc validation
(cherry picked from commit 40870a19af35c114a46603da8380d553303bbce6)

Signed-off-by: Jean-Baptiste Kempf <7b85a41a628204b76aba4326273a3ccc74bd009a@videolan.org>

BinChengfei/phonon-vlc,panzi/phonon-vlc,KDE/phonon-vlc,BinChengfei/phonon-vlc,BinChengfei/phonon-vlc,panzi/phonon-vlc,KDE/phonon-vlc,KDE/phonon-vlc