Log Message:
Update to 0.81:

version 0.81
2008-10-27

- license of manual now GFDL 1.2 or later, with no invariant sections.
  Source is GPL 3.

  Thanks to Karl Berry.

- Nero image handling more complete.
    CD-Text processing.
    DAO in read_audio_sectors.
    ISRC processing.

- ISRC query for image files.

  Thanks to Robert William Fuller on the above two items

- Allow reading pregap of a track via get_track_pregap_lsn(). Add
  Section on "CD-DA pregap" in libcdio manual

- Allow cross-compiling to mingw32. Patch from Peter Hartley.

- Make iso9660 time setting/getting routines (iso9660_{g,s}et_{d,l}time)
  reentrant and remove bugs in that code. Courtesy Nicolas Boullis.

- OSX fixes