usr.bin: Automated cleanup of cdefs and other formatting

Apply the following automated changes to try to eliminate
no-longer-needed sys/cdefs.h includes as well as now-empty
blank lines in a row.

Remove /^#if.*\n#endif.*\n#include\s+<sys/cdefs.h>.*\n/
Remove /\n+#include\s+<sys/cdefs.h>.*\n+#if.*\n#endif.*\n+/
Remove /\n+#if.*\n#endif.*\n+/
Remove /^#if.*\n#endif.*\n/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/types.h>/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/param.h>/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/capsicum.h>/

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/

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

Build finger(1) with WARNS=6.

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.

Migrate finger(1) towards utmpx.

It was already ported to use libulog, which makes it simpler now. Be
sure to catch the error returned by setutxdb(). Otherwise it may perform
a lookup on the utx.active database.

Migrate finger(1) away from <utmp.h>.

Unfortunately it also uses lastlog, which means we must resort to local
extensions of the utmpx-interface. Because the user name and TTY name
are now nul-terminated, there is no need to copy around strings as
often.

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 multiple inclusion guards. Mostly this is for extern.h, which was
included twice by lprint.c, which included both finger.h and extern.h.
finger.h, in turn, includes extern.h. The redundant include of extern.h
was removed from lprint.c, as part of this change, but the include guards
were added anyway out of spite.

If stat() on the terminal specified in utmp fails due to ENOENT, don't
print a warning, and set the idletime variable for the entry to -1;
then pick up the -1 later in sprint() and lprint() and ignore those
idle times by printing just whitespace. When third party applications,
such as kdm, insert utmp entries, they sometimes use strings like ":0",
which can't be stat()'d and currently result in warnings that are
not helpful to the user.

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

Add -g option, which restricts printing of the gecos fields to just the user's
real name.

PR: bin/39462
Submitted by: Mike Makonnen <makonnen@pacbell.net>
Obtained from: NetBSD
MFC after: 1 week

remove __P

Unremoved used includes. <sys/time.h> is needed if <sys/stat.h> isn't
polluted, and <sys/types.h> is strictly a prerequisite for <sys/stat.h>
untiil we drop support for pre-2001 versions of POSIX.

GRR. Unbreak WARNS=2.
cc1: warnings being treated as errors
usr.bin/finger/lprint.c: In function `lprint':
usr.bin/finger/lprint.c:191: warning: precision is not type int (arg 2)
*** Error code 1

Pointy hat to: markm

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.

WARNS=2 fix, remove 'register' and use __FBSDID().

Don't attempt to parse %c

Spelling
Remove unused #includes

.publickey -> .pubkey to match other finger daemons.

Suggested by: assar

Add support for a .publickey file.

Submitted by: Svein Skogen <tds@nsn.no>
Reviewed by: brian, ru

-Wall cleanup.

PR: 22187

Allow finger.conf to contain aliases for files that will be displayed
when fingered.

Submitted by: Mark Knight <markk@knigma.org>

$Id$ -> $FreeBSD$

fix 8bit clean issue
PR: 7519

Add rcsid, usage(). Silent -Wall. Use warn(3).

Skip \r character while printing Plan/etc. text files, it allows to
handle \r\n and \n\r files properly.
Previous variant put ^M for \r\n and ^M\n for \n\r

Merge from Lite2

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

Allow national printable chars in .plan

Replace asctime/ctime by strftime %c to use national representation

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

Install Luke's enhancements for finger.

By default, behave like the old ugly 4.4bsd finger and print office
information instead of remote login information.

It's an easy one line fix to make it behave like most other vendor's
fingers if we decide to change the default.

Reviewed by: pst

BSD 4.4 Lite Usr.bin Sources