802_11 stack from FreeBSD-current

[Andrew Atrens]

I've put up a first set of patches bringing in the 802_11 stack
from FreeBSD-current. This includes WME and WPA support.

Currently only one driver is included (and not even tested!) this
is wi.

I'm locally using this with a converted ath driver (no, not the one
that's up on leaf now .. I'll put this newer version that works with
this stack up in a few days ...

http://leaf.dragonflybsd.org/~atrens/wpa_stack.diff

This is preliminary - only tested a few days - so your mileage may
vary.

It's NOT ready for commit, just looking for some early feedback ..

Andrew.