The documentation file (which PulkoMandy only merged today) was created
over a year ago from a short conversation I had with him, and by now
a lot of its information is already outdated or has been merged into
comments in the driver already (specifically, the notes at the end about
error messages no longer apply as there are different ones, and the
bugs causing those errors have since been fixed.)
A few of the statements in it were not noted in the driver, though,
so I have added those as comments.
* There is now a 'busses' folder, and the extant USB/SDHCI/Bluetooth/etc.
docs now live in it, instead of various other places.
* kernel/ports is now kernel/arch, like it is in src/system.
SPARC documentation is now in there, too.
* VM files (these are rather outdated) are now in kernel/vm.
* SCSI ASC info removed, this is easily available online and
it doesn't seem to be very relevant.