Original commit message from CVS:
* ext/dvdread/stream_labels.c: new file
* ext/dvdread/stream_labels.h: new file
* ext/dvdread/Makefile.am:
* ext/dvdread/dvdreadsrc.c: (_seek_title):
Extract audio stream label from DVD IFO files.
It only dump them on the console for now, still have to
make playbin aware of them.
