usr.bin: 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 $FreeBSD$: two-line .c pattern

Remove /^#include\s+<sys/cdefs.h>.*$\n\s+__FBSDID\("\$FreeBSD\$"\);\n/

w: cosmetic fixes.

Sponsored by: Klara, Inc.

General further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 3-Clause license.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

Special thanks to Wind River for providing access to "The Duke of
Highlander" tool: an older (2014) run over FreeBSD tree was useful as a
starting point.

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

Convert to use libxo.

Obtained from: Phil Shafer <phil@juniper.net>
Sponsored by: Juniper Networks, Inc.

Remove the advertising clause from UCB copyrighted files in usr.bin. This
is in accordance with the information provided at
ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change

Also add $FreeBSD$ to a few files to keep svn happy.

Discussed with: imp, rwatson

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.

Revert most part of 200420 as requested, as more review and polish is
needed.

Remove unneeded header includes from usr.bin/ except contributed code.

Tested with: make universe

MFC r196652: Fix the problem that the entry broke into two lines
with multi-byte AM/PM date format.

Approved by: re (kib)

Constify format string pointer, otherwise this would trigger warning when
higher warning level is enabled.

Fix the problem that the entry broke into two lines with multi-byte
AM/PM format.

Reported by: takawata

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

w(1) uses strftime %b with to print the abbreviated month name
if a user logged in more than a week ago.
This may contain multibyte characters (e.g. when using UTF-8).
This string is then aligned on byte-length rathern than char-length,
resulting in misalignment and unfinished multibyte characters.

PR: 126657
Submitted by: Johan van Selst <johans@stack.nl>

ANSI style function declarations.

WARNS=2 fix, use __FBSDID() and sort includes.

WARNS=2 not added to Makefile as it is to become default.

Fix width for printing time

Oops, remove tabs sneaked in wrong place

Use AM/PM time only when available in locale

Fix cosmetic bug in time display. Current day logins are now displayed
as plain time as originally intended, instead of displaying DayHH times
when the login time happens to be prior the GMT - TZ difference.
(Only noticable on systems operating east of GMT/UTC).
Local times are now used to determine the day.

$Id$ -> $FreeBSD$

Fix the annoying bug introduced in rev 1.18 that caused each line to be
one character shorter than the previous in a stairstep fashion when long
idle times were involved.

A couple of nits:
- spelling/typo fix.
- some of the easier style(9) fixes where it was bothering me.
- Handle 100+ days idle time (ha!). Probably the right thing to do is
to do a snprintf into a buffer and strlen the result rather than doing
hackery on magic numbers.

XXX the wide (and mostly unused) username and tty columns annoy me since
it it could be used for more useful information for the command. We should
actually count the largest username and tty and adjust like 'ls -l' does.

-Wall cleanup.

Revert some casts I introduced.
Requested by: Bruce.

Typo in usage(). Err -> errx when testing allocations.

Made sure the string formated by strftime() is properly
null-terminated.

Should go to RELENG_2_1 and RELENG_2_2.

Reviewed by guido@freebsd.org.

Reduce the command field width by one when idle time is > 9 days, to
eliminate unsightly blank line.

Possibly a 2.2 candidate.

Fix one column wrong offset in previous change days->day

Print "1day" instead of "1days"

Delete bogus referneces to timezone code internal header file `tzfile.h',
which is no longer bogusly installed in /usr/include.

Remove trailing whitespace.

idle time == 0 printed now as "-" like in good old BSD
skip cua* 3 chars as tty* 3 lchars

BSD 4.4 Lite Usr.bin Sources