libipsec: make const-correct

- add const to the appropriate places in the libipsec public API and the
relevant internal functions needed to support that.

- replace caddr_t with c_caddr_t in ipsec_dump_policy()

- update the ipsec_dump_policy manpage to use c_caddr_t (this manpage
was already wrong as it had "char *" instead of caddr_t previously).

While here, update pfkeyv2.h to not cast away const in the PFKEY_*()
macros.

This should not cause any ABI changes as the actual types have not
changed.

Reviewed by: imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/1099

Remove $FreeBSD$: two-line nroff pattern

Remove /^\.\\"\n\.\\"\s*\$FreeBSD\$$\n/

ipsec_set_policy(3): fix sentence

Sponsored by: NVIDIA Networking
MFC after: 3 days

A new jail(8) with a configuration file, to replace the work currently done
by /etc/rc.d/jail.

Create the altix project branch. The altix project will add support
for the SGI Altix 350 to FreeBSD/ia64. The hardware used for porting
is a two-module system, consisting of a base compute module and a
CPU expansion module. SGI's NUMAFlex architecture can be an excellent
platform to test CPU affinity and NUMA-aware features in FreeBSD.

- Import the HEAD csup code which is the basis for the cvsmode work.

Commit IPv6 support for FAST_IPSEC to the tree.
This commit includes all remaining changes for the time being including
user space updates.

Submitted by: bz
Approved by: re

Markup fixes.

Clean up some descriptions and remove ambiguities in the language.
Add explanations to the examples.

MFC after: 1 week

Fixed the misplaced $FreeBSD$.

Back out last delta, it just unpolitely reverted some local changes.

- plug memory leak.
- fixed a length of the sadb extension in the case of pfkey_send_x5().
- used getprotobynumber() for printing a upper layer protocol name.
- modified the output format against the change of the setkey syntax
about a icmp6 type/code.
- don't enumerate reserved fields. use memset.

Obtained from: KAME

The .Fn function

The .Fn function. Spelling.

Correct typos, mostly s/ a / an / where appropriate. Some whitespace cleanup,
especially in troff files.

english(4) police.

just merged cosmetic changes from KAME to ease sync between KAME and FreeBSD.
(based on freebsd4-snap-20020128)

Reviewed by: ume
MFC after: 1 week

mdoc(7) police: Use the new .In macro for #include statements.

mdoc(7) police: fixed the "new sentence" bogons.

mdoc(7) police:

Avoid using parenthesis enclosure macros (.Pq and .Po/.Pc) with plain text.
Not only this slows down the mdoc(7) processing significantly, but it also
has an undesired (in this case) effect of disabling hyphenation within the
entire enclosed block.

Remove whitespace at EOL.

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

Fix typo: ispec -> ipsec

PR: 24005
Submitted by: Jimmy Olgeni <olgeni@uli.it>

synchronize with latest kame tree.

behavior change: policy syntax was changed. you may need to update your
setkey(8) configuration files.

Fix typo.

Noticed by: hoek

. add a note about IPv6/IPsec integration to the FreeBSD
. replace .Po/.Pc pairs with .Pq
. remove some unneeded comments
. .Lb-ify

s/ispec/ipsec/, and add a missing comma.

PR: docs/16995
Submitted by: Benno Rice <benno@netizen.com.au>

Fixed missing include in synopsis.

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

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