sg (scsi generic) again

[Jurgen Botz <jurgen botz org>]

So at one point it was dropped because "deprecated", now it's
back in, but in 2.6.5-1.327 at least it seems to be broken...

The module loads without complaining, but it doesn't seem to
do anything; no message in 'dmesg', trying to access it gives
"Error trying to open /dev/sg0 exclusively (No such device or address)."
That error was from "grip", "cdrecord -scanbus" also doesn't
find anything.

:j