fix mdoc references
Try (again) to get the chip number right for Alcor and Pyxis, using the
following (iffy) hueristic:

	CIA revision 1   -> 21171
	CIA revision 2   -> 21172
	CIA revision > 2 -> 21174
fix mdoc references and .Nm usage
fix bad mdoc reference & clean up a little
In wdcintr(), add a catch-all case so that this will compile if no
children are configured.
fix mdoc reference
fix mdoc reference, plus some other mdoc problems
Add a comment about some future work.
Add a stub pckbc_machdep_cnattach() which simply returns an error.  This
function is meant to glue the new pckbd driver to the old console code
on ports which use the old PC-style console code.  This will eventually
be purged when all of the old legacy consoles have gone away.
Fix mdoc .Xr reference for syntax or correctness (e.g. exec(2) versus exec(3)).
Make other mdoc corrections as inspection dictated.
fix mdoc references
fix mdoc references and other mistakes
"System V" -> ".At V"
fix mdoc references and mistakes
Log the peer's IP address on received window scale factors larger than
TCP_MAX_WINSHIFT (14), as recommended in Section 2.3 of RFC1323.
Fix KTROP_CLEARFILE so it does the same thing as KTROP_CLEAR (i.e. vrele()
rather than vn_close()).  Fixes PR 5357.
fix mdoc references
fix mdoc references
Change debug printing a littel again.
Cute buglet: you can end up with zero CCBs if there were no targets
seen by the adapter. Always leave a minimum so the adapter can
finish attaching- it may be there w/o targets for a reason.