CFT: ath hal 0.9.18.0

You can find a new ath hal at:

http://people.freebsd.org/~sam/ath_hal-20060909.tgz

It's gone through basic testing but not the more extensive testing I do
before a release.

This version has some important changes:

o fix support of the AR2424 (2.4G-only PCI-express)
o RXORN interrupts are no longer treated as fatal on "current" 5212 parts
o removal of the ah_decompMask array from the public state
o support for combined tkip mic tx+rx keys on modern parts (means you
can support up to 57 stations in ap mode w/o spilling the key cache)
o correct rollover handling when fetching 64-bit tsf values
o reduce stack usage for some 5212 cards (as reported by netbsd)
o change xscale/arm public builds to be tagged as using VFP (there's a
new wackelf utility that can be used to patch the ELF header based on
local toolchain requirements--there is no floating point in the hal)

To make use of the new tkip mic keycache support you need to patch the
driver with this diff:

http://people.freebsd.org/~sam/keycache.patch

Should work on both HEAD and RELENG_6 w/o any driver mods.

	Sam