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/

Mark usage function as __dead2 in programs where it does not return

In most cases, usage does not return, so mark them as __dead2. For the
cases where they do return, they have not been marked __dead2.

Reviewed by: imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/735

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

fold(1): Revert incorrect r308432

As Jean-Sébastien notes, fold(1) requires handling argv-supplied files. That
will require a slightly more sophisticated approach.

Reported by: dumbbell@
Sponsored by: Dell EMC Isilon

Capsicumize some trivial stdio programs

Trivially capsicumize some simple programs that just interact with
stdio. This list of programs uses 'pledge("stdio")' in OpenBSD.

No objection from: allanjude, emaste, oshogbo
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D8307

Add missing static keywords to fold(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

Fix a segmentation fault in argument processing.

The crash was caused by a command line such as this one:
# foldl -b1

PR: bin/151592
Reported by: Marcus Reid <marcus@blazingdot.com>
Tested by: Marcus Reid <marcus@blazingdot.com>
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.

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

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

Add support for multibyte characters and characters that take up more
than one column position.

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

Only advance the column position for printable characters, update manual
page to emphasise that we count column positions, not characters.

If a file cannot be processed, try to process any remaining files
then exit non-zero.

Localize it, LC_CTYPE

Add the -b option (break at byte position, not column number) and the -s
option (try to break at word bounaries) for SUSv3 conformance.

Partially based on the NetBSD version, with the following changes:
- style(9)
- break on <blank>s, not spaces, per POSIX (and GNU)
- when looking for last space on line, search backwards instead of
forwards; less comparisons needed this way.
- use LINE_MAX macro instead of a magic number and a comment saying it is
LINE_MAX.

PR: 36245
Reviewed by: mike
Obtained from: NetBSD (partially)

remove __P

Make clear that -w gets an argument. Add __FBSDID and remove unused
#include

optarg and optind are declared in unistd.h.
h_error is declared in netdb.h

$Id$ -> $FreeBSD$

Add usage(), use err(3).

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

BSD 4.4 Lite Usr.bin Sources