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

Update share/examples/* to properly install /usr/share/examples.

As result of this, a new examples package is now created.

Note, this is only effective with 'SHARED=copies' (the default),
as the 'SHARED=symlinks' mechanism will create a symlink to the
source tree version of the file(s).

Sponsored by: The FreeBSD Foundation

Remove NO_OBJ

For meta mode we will want objdirs.

Differential Revision: D2748
Reviewed by: brooks imp

Update pf examples from OpenBSD to catch up with new stateful defaults and
other syntax changes. Move pf.conf from /etc to examples, too.

Start the dreaded NOFOO -> NO_FOO conversion.

OK'ed by: core

For variables that are only checked with defined(), don't provide
any fake value.

Bring in some examples (and create space for future work here):
- Add OpenBSD example rulesets as advertised in etc/pf.conf and pf.conf(5)
- Tweak the pointer to fit the FreeBSD default location share/examples/pf
- Account for the new directory in BSD.usr.dist (no hier(7) change required
as share/examples is an opaque item there).

Obtained from: OpenBSD
Reminded by: Thomas T. Veldhouse
PR: docs/71691
MFC after: 2 days