Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

Update for vaps:
o do not force monitor mode; the wlanX ifnet must be an ahdemo mode vap
o move channel change work before marking ifnet up to avoid churning
the state machine
o change default ifnet name to "wlan0"

Approved by: re (kensmith)

o fix a buffer overflow in save_key() that occurs with 104-bit wep
o make some variables parameters (frequency of crack, and maximum channel)
o try to spoof mac if association fails

Submitted by: Andrea Bittau <a.bittau@cs.ucl.ac.uk>

Due to the recent "aircrack-ptw" WEP cracking discovery, I thought
that it might be worth fixing a couple of bugs in wesside and making
it use the new cracking technique. I think this enhancement makes
the tool quite usable. It is possible to recover keys in only a
couple of minutes.

* Fix ACKs. Firmware will ACK data [just set the MAC addr correctly].
* Fix RX routines. Process all packets read().
* Use aircrack-ptw [built-in] rather than external aircrack.
* Log data in pcap format so that it may be used by others [e.g. aircrack-ng].

Submitted by: Andrea Bittau <a.bittau@cs.ucl.ac.uk>

another tool that uses the raw tx api

Submitted by: Andrea Bittau <a.bittau@cs.ucl.ac.uk>