Replace magic constant 100 with CDIO_MAX_TRACK+1 where appropriate.
_cdio_osx: save session number and presumably some tighter coding.
nrg.c: make sure we add zero byte to end of MCN.
Default device lists default to CAM device name.
Simplify, correct and make more complete CAM support.
With the above we can finally use libcdio for cd-read, vcdimager and
probably vlc and xine.
Many thanks to Heiner.
Hopefully 3 bugs are fixed:
- we get the leadout track now, no core dumps
- MSF reporting is corrected
- track format and mode
_cdio_linux.c: use cdio #define rather than GNU/Linux one.
