First attempt to reinstate a libcdio cdda.

First attempt to reinstate a libcdio cdda.

vlc_meta.h: added CD-Text, ISO 9660, and CDDB fields. Separate email
will be sent about this.

Note: sound may be off by 2 seconds (150 sectors or pregap
amount). The sound for both this and the other cdda plugin don't work
for me. Before the last SVN update though that's what it sounded like.