usr.sbin: Remove ancient SCCS tags.

Remove ancient SCCS tags from the tree, automated scripting, with two
minor fixup to keep things compiling. All the common forms in the tree
were removed with a perl script.

Sponsored by: Netflix

Remove $FreeBSD$: one-line nroff pattern

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

Renumber copyright clause 4

Renumber cluase 4 to 3, per what everybody else did when BSD granted
them permission to remove clause 3. My insistance on keeping the same
numbering for legal reasons is too pedantic, so give up on that point.

Submitted by: Jan Schaumann <jschauma@stevens.edu>
Pull Request: https://github.com/freebsd/freebsd/pull/96

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.

Update nologin(5) to match the modern reality of login.conf(5) and PAM.

Per letter dated July 22, 1999 remove 3rd clause of Berkeley derived software
(with permission of addtional copyright holders where appropriate)

Assorted markup, grammar, and spelling fixes.

Remove whitespace at EOL.

mdoc(7) police: removed HISTORY info from the .Os call.

mdoc(7) police: removed history info from the .Os FreeBSD call.

Be a little clearer about the relationship between these two.

PR: docs/20067
Submitted by: Takayuki Hagihara

$Id$ -> $FreeBSD$

Added xref to nologin(8).

Oops, I missed a few more /etc/nologin references yesterday. It appears
my check of the tree was incomplete. Sorry guys.

Reported by: Ben Smithurst <ben@scientia.demon.co.uk>

Add Id. .Nm nologin -> .Nm.

An odd merge from 2.2 to -current. Somehow that 2.2 nologin.5
man page was in better shape than the 3.0-current version,
so I'm committing the 2.2 version to 3.0. Whatever happened,
it was my fault :-).

Fix a bunch of spelling errors.

A manpage. May be the file nologin.5 should located in
src/share/man/man5.