Remove copyright strings ifdef'd out

We've ifdef'd out the copyright strings for some time now. Go ahead and
remove the ifdefs. Plus whatever other detritis was left over from other
recent removals. These copyright strings are present in the comments and
are largely from CSRG's attempt at adding their copyright to every
binary file (which modern interpretations of the license doesn't
require).

Sponsored by: Netflix

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 $FreeBSD$: one-line .c pattern

Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/

col(1): Fix a couple of bugs

- When flushing extra lines after all input has been processed, make
sure that local state is reinitialized correctly.
- When -f is specified, make sure to end output with a full newline.
- Fix some style issues and update comments.
- Add some regression tests.

PR: 249308
Submitted by: Yang Zhong <yzhong@freebsdfoundation.org>
MFC after: 3 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D26536

Convert `cap_enter() < 0 && errno != ENOSYS` to `caph_enter() < 0`.

No functional change intended.

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

Remove the duplicated code using Capsicum helpers.

Reviewed by: cem, ed, bapt, emaste
Differential Revision https://reviews.freebsd.org/D8140

For half and reverse line feeds, recognize both SUSv2-style escape-digit
and BSD-style escape-control-char sequences in the input stream.

Submitted by: schwarze at OpenBSD
Discussed with: schwarze at OpenBSD
Obtained from: OpenBSD

Fix about ten integer overflows and underflows and a handful of logic
errors in line number handling.

Submitted by: ingo at OpenBSD
Discussed with: ingo at OpenBSD
Obtained from: OpenBSD

Capsicumize col(1)

Use defines to improve clarity

MFC after: 2 weeks

col: fixing 25 year old bug

Makes col(1) respect POSIX again for escape sequences as decribed in its manpage
The bug was introduced in CSRG in 1990
This also reverts r280911

Differential Revision: https://reviews.freebsd.org/D2424
Reviewed by: jhb
MFC after: 2 weeks

Remove bogus cast.

Fix to col when printing half-line feeds w/ -f option...

Message-Id on openbsd-tech: 20141017195810.GJ132@iris.usta.de
Submitted by: Ingo Schwarze
Obtained from: OpenBSD
MFC after: 3 days

Add missing static keywords to col(1)

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.

Remove more extraneous ;s.

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.

The variables i and tot don't need to be static.

Avoid shadowing a local scratch variable,

Sort #include directives and remove one duplicate that crept in to the
previous commit.

Add support for multibyte characters, loosely based on Bruno Haible's
work in the util-linux package.

ANSIify function definitions.
Add some constness to avoid some warnings.
Remove use register keyword.
Deal with missing/unneeded extern/prototypes.
Some minor type changes/casts to avoid warnings.

Reviewed by: md5

Remove local prototypes for main().

remove __P

Style improvements recommended by Bruce as a follow up to some
of the recent WARNS commits. The idea is:

1) FreeBSD id tags should follow vendor tags.
2) Vendor tags should not be compiled (though copyrights probably should).
3) There should be no blank line between including cdefs and __FBSDIF.

Use __FBSDID().

Remove the misnamed `xmalloc' and replace its uses with the realloc (along
with error checking) that it actually was.

Add the -p flag to force unknown control sequences to be passed
through unchanged.

Reviewed by: silence on -audit
Obtained from: NetBSD
MFC after: 3 weeks

Use err(3) and style(9) cleanup.

MFC after: 2 weeks

Fix a trivial warning and clamp down with WARNS=2

MFC after: 1 week

Document the -h option.

Use errx(). .Nm fixes

Tweaks to allow compiling -Wall (mostly adding "const" to char rcsid[]).

compare return value from getopt against -1 rather than EOF, per the final
posix standard on the topic.

Merge from Lite2

Import some parts of CSRG 4.4BSD-Lite2 usr.bin sources to fix tree build.

Add setlocale LC_CTYPE

Obtained from: looked at the fix in 1.1.5 and rewrote it

Fix entabbing.

BSD 4.4 Lite Usr.bin Sources