yellow guy" in sin city or the red dressed girl in the beginning of
schindlers list

The libvlc.so ABI is still way too unstable IMHO.

This commit will probably break havoc in bindings in the short term,
but hey, this is the unstable branch

(suppress one more ugly piece of code)

I'm not sure that this is ok but it definitively prevents impossible to solve puzzles from being generated here.

Though there is not an useless lock and iconv handler
in the Darwin specific stuff.

 * Fix avformat demux IOSeek. Should improve playback of some flv's 
 * Improve avformat demux SET_POSITION.