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

Just install ar5523.bin into /usr/share/firmware and stop compiling it
in.

Differential Review: https://reviews.freebsd.org/D5639

Document why we use -z nonexecstack in the Makefile since it
is so unusual. Turn off mis-match warnings for building uathload
because the firmware .o file is produced in a way that we
can't get to match exactly. This fixes the build on mips,
so stop excluding it from the build.

Only use -z noexecstack for these explicit arches: i386, amd64, powerpc
and powerpc64. Other arches currently do not support this feature.

Reminded by: kib

Fix the last binary in the base system that still has an executable
stack, /usr/sbin/uathload.

Since this program links in a .o file containing a firmware blob, and
there is no clean way to add a .note.GNU-stack section to this .o file,
we simply use the -z noexecstack option to ld here.

The last big commit: let usr.sbin/ use WARNS=6 by default.

add uathload.8

Reviewed by: brueffer

Add uath(4) wireless USB driver for Atheros AR5005UG and AR5005UX
chipsets.

Reviewed by: sam