VLCKit: fix Mac-specific prefix header
VLCKit: fix Mac-specific prefix header

programming086/VLCKit,simon1984/test,kamcord/VLCKit,i386/vlckit,strukturag/VLCKit,programming086/VLCKit,waterskier2007/VLCKit,kamcord/VLCKit,CollabraMusic/VLCKit,larrytin/VLCKit,larrytin/VLCKit,siuying/VLCKit,kamcord/VLCKit,siuying/VLCKit,siuying/VLCKit,CollabraMusic/VLCKit,hpsoar/VLCKit,simon1984/test,hpsoar/VLCKit,waterskier2007/VLCKit,simon1984/test,brion/VLCKit,CollabraMusic/VLCKit,waterskier2007/VLCKit,strukturag/VLCKit