playlist engine reworked

issue #50 fix
added video tracks support

but it seems, libvlc support of video tracks is a little buggy, at least in some case.
so please don't judge strictly.
version 0.0.7
Merge branch 'master' of https://code.google.com/p/fbvlc
Upgrade VLC to 2.1.0
Fix Info.plist due to inconsistentsy