[CFT] please test out -HEAD wireless before I merge things back to stable/9

Hi all,

I've committed some work to head which needs some further testing
before I am comfortable backporting it to stable/9.

This currently includes:

* a fix for the ieee80211_swbmiss() panic;
* various ath changes, both for sta and hostap modes and for all
chipsets ar5212 and later;
* an alignment fix to bwi.

I'd appreciate some further testing and feedback before I port this to stable/9.

So please, update to -HEAD and let me know how wireless behaves for
you. Especially if you saw the software beacon miss panic, but a
general "it still works fine for me!" will do fine. :)

Thanks!


Adrian