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

Add ipfilter support to blacklistd-helper

In addition to adding initial support for the ipfilter
packet filtering system, wrap a few long lines, perform
whitespace cleanup and sync with upstream changes made
in NetBSD.

Submitted by: cy
Reviewed by: cy
Approved by: re (hrs)
Relnotes: YES
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D6823

Add IPFW support to blacklistd-helper

Relnotes: YES
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D6753

Move misplaced break statement to right place

Reported by: Coverity
CID: 1304340
Reviewed by: lidl
Differential Revision: https://reviews.freebsd.org/D6749
Sponsored by: Rubicon Communications (Netgate)

Bump dates in blacklist related manpages

Reported by: araujo
Sponsored by: The FreeBSD Foundation

Note blacklist support first appeared in FreeBSD 11

Reported by: jbeich
Sponsored by: The FreeBSD Foundation

Fixup path in NetBSD supplied documentation for FreeBSD

NetBSD installs the blacklist-helper script in /libexec, and
it goes into /usr/libexec on FreeBSD. Update the docs to
match FreeBSD's installation location.

Reviewed by: rpaulo
Approved by: rpaulo
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D6592

Import NetBSD's blacklist source from vendor tree

This import includes The basic blacklist library and utility programs,
to add a system-wide packet filtering notification mechanism to
FreeBSD.

The rational behind the daemon was given by Christos Zoulas in a
presentation at vBSDcon 2015: https://youtu.be/fuuf8G28mjs

Reviewed by: rpaulo
Approved by: rpaulo
Obtained from: NetBSD
Relnotes: YES
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D5912

Reviewed by: rpaulo
Approved by: rpaulo
Obtained from: NetBSD external/bsd/blacklist @ 20160409
Relnotes: YES
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D5912