VLCKit: allow override library init default options
VLCKit: allow override library init default options

Signed-off-by: Felix Paul Kühne <af44a38b4065def9b90f0b66e4658837dd45b77d@videolan.org>

simon1984/test,larrytin/VLCKit,CollabraMusic/VLCKit,kamcord/VLCKit,kamcord/VLCKit,kamcord/VLCKit,strukturag/VLCKit,simon1984/test,CollabraMusic/VLCKit,programming086/VLCKit,waterskier2007/VLCKit,siuying/VLCKit,hpsoar/VLCKit,programming086/VLCKit,hpsoar/VLCKit,siuying/VLCKit,larrytin/VLCKit,strukturag/VLCKit,waterskier2007/VLCKit,simon1984/test,siuying/VLCKit,CollabraMusic/VLCKit,waterskier2007/VLCKit