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.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 .c pattern

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

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

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.

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

Use __FBSDID over rcsid[]. Protect copyright[] where needed.

Don't use NULL when we really mean 0 for call to pw_edit.

Use libutil and libypclnt for all passwd manipulation and NIS needs.

Sponsored by: DARPA, NAI Labs

ANSIfy and constify.

Sponsored by: DARPA, NAI Labs

Do not rely on malloc() to zero-fill allocated memory, since it is
not documented as doing so. This fixes a potential segmentation
violation.

PR: 14465
Reported by: Tony Finch <fanf@demon.net>

$Id$ -> $FreeBSD$

Move call to umask(0) back into pw_util(), because the latter
function is also used by chpass(1) and passwd(1).

Force umask to 077 (instead of 000) during the edit phase, to get
secure permissions in case the user attempts to save something to
a file of his own.

Move umask stuff out of pw_init() into main() for better visibility
of overall umask tweaking logic.

PR: misc/11797

Report the correct master.passwd path on failure when the -d option is
used.

Add -d option to vipw(8) to allow selection of an alternative directory
for the password files.

PR: 2703
Submitted by: jmg

Statisize usage().

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

Implement incremental passwd database updates. This is done by ading a '-u'
option to pwd_mkdb and adding this option to utilities invoking it.
Further, the filling of both the secure and insecure databases has been
merged into one loop giving also a performance improvemnet.
Note that I did *not* change the adduser command. I don't read perl
(it is a write only language anyway).
The change will drastically improve performance for passwd and
friends with large passwd files. Vipw's performance won't change.
In order to do that some kind of diff should be made between the
old and new master.passwd and depending the amount of changes, an
incremental or complete update of the databases should be agreed
upon.

Remove trailing whitespace.

BSD 4.4 Lite usr.sbin Sources