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)

add mesh support

Submitted by: rpaulo
Approved by: re (kib)

TDMA support for long distance point-to-point links using ath devices:
o add net80211 support for a tdma vap that is built on top of the
existing adhoc-demo support
o add tdma scheduling of frame transmission to the ath driver; it's
conceivable other devices might be capable of this too in which case
they can make use of the 802.11 protocol additions etc.
o add minor bits to user tools that need to know: ifconfig to setup and
configure, new statistics in athstats, and new debug mask bits

While the architecture can support >2 slots in a TDMA BSS the current
design is intended (and tested) for only 2 slots.

Sponsored by: Intel

misc cleanups for stricter compilation

update copyright year and nuke dual-gpl bits that should've removed long ago

Allow wlandebug to set the default debug level which is inherited when vaps are
created.

update for vaps

Supported by: Hobnob

Forced commit to note repo copy from src/tools/tools/net80211/wlandebug

Approved by: re (rwatson)

o add 11n knob
o gcc42 stuff

fix typo

MFC after: 1 week

add rate knob for net80211 rate control modules

MFC after: 1 month

o move programs to separate directories and use stock Makefiles;
this simplifies including them in crunchgen images
o rename 80211* programs to wlan* as was originally intended