Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Merge multi-FIB IPv6 support from projects/multi-fibv6/head/:

Extend the so far IPv4-only support for multiple routing tables (FIBs)
introduced in r178888 to IPv6 providing feature parity.

This includes an extended rtalloc(9) KPI for IPv6, the necessary
adjustments to the network stack, and user land support as in netstat.

Sponsored by: Cisco Systems, Inc.
Reviewed by: melifaro (basically)
MFC after: 10 days

Various language fixes.

PR: 38061
Submitted by: Chris Pepper <pepper@rockefeller.edu>
MFC after: 1 week

FAITH's base spec has already been an RFC

Obtained from: KAME
MFC after: 1 day

Fixed the misplaced $FreeBSD$.

Document the fact that these devices are allocated at runtime using
cloning and point to two common methods of doing so.

Make faith loadable, unloadable, and clonable.

Sync with recent KAME.
This work was based on kame-20010528-freebsd43-snap.tgz and some
critical problem after the snap was out were fixed.
There are many many changes since last KAME merge.

TODO:
- The definitions of SADB_* in sys/net/pfkeyv2.h are still different
from RFC2407/IANA assignment because of binary compatibility
issue. It should be fixed under 5-CURRENT.
- ip6po_m member of struct ip6_pktopts is no longer used. But, it
is still there because of binary compatibility issue. It should
be removed under 5-CURRENT.

Reviewed by: itojun
Obtained from: KAME
MFC after: 3 weeks

pseudo-device -> device in kernel config lines. Removed whitespace at EOL.
Reviewed by: joerg, dd

mdoc(7) police: normalize .Nd.

Backout previous changes. The period at the end is correct,
when it is the last of the sentences.

Specified by: mpp, sheldonh

Remove period at the end of Xr macro sentences.
(merge from KAME repository)

Obtained from: KAME project

It's getsockname(2), not getsockname(3).

PR: docs/17102
Submitted by: Udo Erdelhoff <ue@nathan.ruhr.de>

Grammar fixes:
- "In result" generally sounds better as "As a result".
- "faith interface ..." was changed to "The faith interface" at the
beginning of a sentence.

Change .Os macro to an empty one to denote that the KAME files are
not FreeBSD specific.

Made happy: sheldonh

Fix grammar a bit (mostly comma related).

change .Os KAME to .Os FreeBSD, since the manpages as part of the
FreeBSD OS.

libipsec and IPsec related apps. (and some KAME related man pages)

Reviewed by: freebsd-arch, cvs-committers
Obtained from: KAME project