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.

banner(6): Squash a harmless coverity warning

The destination buffer is sized as the sum of program argument lengths, so
it has plenty of room for *argv. Appease Coverity by using strlcpy instead
of strcpy. Similar to a nearby cleanup performed in r316500.

No functional change.

Reported by: Coverity (CWE-120)
CID: 1006703
Sponsored by: Dell EMC Isilon

strcpy => strlcpy, strcat => strlcat

Reported by: Coverity
CID: 1006703 978863 1006745 1347163
Reviewed by: cem
MFC after: 3 weeks
Sponsored by: Spectra Logic Corp
Differential Revision: https://reviews.freebsd.org/D10192

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

Add missing static keywords to banner(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.

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.

ANSIfy various tools in usr.bin/.

Most of these tools properly build at WARNS=6, except for their K&R
function declarations. Fix this, so we can bump WARNS as well.

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

o Check that -w width is not above maximum. Use DWIDTH instead of
hardcoded constant.

Reported by: Gruzicki Wlodek on BugTraq
Obtained from: NetBSD, OpenBSD
MFC after: 1 week

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().

Fixed the race caused by not checking the result of fgets(3):

/usr/bin/env MALLOC_OPTIONS=J banner </dev/null

PR: bin/29074

Fixed the problem when banner(6) would eat last character:

echo -n a | banner

MFC after: 1 week

Fix overflowing on nul character.

PR: bin/16926
MFC after: 1 week

Silence WARNS=2 and BDECFLAGS on alpha and i386

MFC After: 1 week

BDECFLAGS.

while I'm here, fix bitrotted debug code generating template.

Add -d and -t flags to usage. Add usage().

Fix buffer overflow & add $FreeBSD$

Reviewed by: imp

Use const where appropriate.

PR: 10739
Submitted by: Stephen J. Rosnowski <sjr@home.net>
Obtained from: NetBSD PR 6151

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

Merge from Lite2 (reject widths <= 0 instead of pretending that they are 80).

Import Lite2's src/usr.bin/banner. The man page is still on the vendor
branch and this import converts it to mdoc format.

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

Remove trailing whitespace.

BSD 4.4 Lite Usr.bin Sources