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

Merge latest (commit c8c1b3a77934768c7f7a4a9c10140c8bec529059) files
from the git tree. This merges a lot that we're not using, but there's
too many files to be selective and have a hope of catching everything.
If there are conflicts with the rest of the tree, we'll resolve them
on a case by case basis.

MFC after: 2 weeks
Sponsored by: Netflix, Inc.

Import from device-tree git://xenbits.xen.org/people/ianc/device-tree-rebasing.git @c8c1b3a77934768c7f7a4a9c10140c8bec529059