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

use .Mt to mark up email addresses consistently (part6)

PR: 191174
Submitted by: Franco Fichtner <franco at lastsummer.de>

(Mostly) markup fixes.

Approved by: re (blanket)

The correct copyright notice for manpages that copy material from Open
Group's documentation is `/usr/share/examples/mdoc/POSIX-copyright',
not the one I copied from `/usr/share/examples/etc/bsd-copyright'.

Suggested by: simon
2nd pointy hat of the day: yours truly

Add a manpage for pthread_atfork(3). This copies a lot of the text of
the Open Group manpage for pthread_atfork(), available online at:

http://www.opengroup.org/onlinepubs/009695399/functions/pthread_atfork.html

which should be ok, since Daniel Eischen had mailed me about Open
Group manpages and the fact that they have granted permission to
FreeBSD to use their material. Any differences from the OG text are
my changes to the original manpage text submitted by Alex Vasylenko:

- In an effort to clean up the part that describes hooks and their
calling order, I used a list instead of a single paragraph for all the three
types of fork() hooks.
- After a short discussion with Dima Dorfman a long long time ago in a
far away galaxy, I changed the RETURN VALUES section to look more
like the rest of the pthread_xxx.3 manpages.

PR: docs/68201
Submitted by: Alex Vasylenko <lxv@omut.org>