on error.
Add MMC version of get_disc_last_lsn.
More regularization of driver_return_code_t and get_disc_last_lsn
There's probably some small driver breakage which will be fixed soon.
read.{c,h}: separate include for the reading routines.
disc.{c,h}: more moved here from corresponding cdio.
device.c: a place for device/driver related routines.
interface.c: break up line to make debugging easier.
Add more convenience track routines.
Set access-mode for image routines to be the image drivers - for uniformity.
Some name regularization.
And we're in 2005 now.
