Slightly frustrated by the lack of documentation for some stuff I hacked up the 
following two man pages a few minutes ago: obio.4 and mesh.4.

Both are available at http://blarf.homeip.net/netbsd/

I'll open a PR later tonight when I'm done with whatever it is I was planning to
do today.

There are a couple others (mediabay, ncrscsi, sn) that I'll probably churn out 
within the next few days.

Feedback, as always, would be much appreciated.

- alex