Copy stable/11@r303970 to releng/11.0 as part of the 11.0-RELEASE
cycle.

Prune svn:mergeinfo from the new branch, and rename it to RC1.

Update __FreeBSD_version.

Use the quarterly branch for the default FreeBSD.conf pkg(8) repo and
the dvd1.iso packages population.

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

Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

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

[bwn] add opt_wlan.h and opt_bwn.h to each of the phy_n source files.

[bwn] add initial bwn(4) N-PHY code, ported from Linux b43.

This is a GPLv2 PHY-N implementation based on the Linux b43 driver,
ported over to work in bwn(4).

I've tested this on the BCM4321 11abgn device, in 11bg and 11a modes.
The b43 PHY code only supports 11abg, no 11n, and 20MHz only wide
channels.

Yes, this is a GPLv2 driver, so it won't be included in the
default builds.

Tested:

* BCM4321 11abgn device (Apple!), 11bg and 11a STA mode.

Obtained from: Linux b43