ALTQ driver: an(4), ath(4), hme(4), ndis(4), vr(4) and wi(4)

Hi,

patch at:
http://people.freebsd.org/~mlaier/altq_driver2.diff

If you are maintaining any of the above, please take a look and tell me if you 
object. ndis(4) maintains code portability to 5.2.1 as requested.

All drivers were tested as described on:
  http://people.freebsd.org/~mlaier/ALTQ_driver/

After this we have ALTQ support for the following NICs:
  an(4), ath(4), bfe(4), de(4), em(4), fxp(4), hme(4), lnc(4), ndis(4), rl(4), 
  sis(4), tun(4), vr(4), wi(4) and xl(4).

I'll happily add *your* driver to the list if you can do some basic tests as 
described on above URL. Please let me know if you want to try a driver not 
yet patched on the page (or if you run into problems with any patch from 
there). TIA!

-- 
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