usr.sbin: 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.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/

Fix `clang -Wcast-qual` issues

Remove unnecessary `char*` casting for arguments passed to `cget*(3)`, and
deconst `_PATH_PRINTCAP` before passing it to `cget*` via the `printcapdb`
variable.

This unblocks ^/projects/runtime-coverage-v2 from building cleanly on
universe13a.freebsd.org. I suspect the issue was introduced through some
changes to `bsd.*.mk` inclusion on the branch, which I will continue to
investigate/isolate.

MFC after: 1 week
Tested with: clang 8 (arm64)

spdx: initial adoption of licensing ID tags.

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.

Initially, only tag files that use BSD 4-Clause "Original" license.

RelNotes: yes
Differential Revision: https://reviews.freebsd.org/D13133

lpr: replace 0 with NULL for pointers.

Found with devel/coccinelle.

Reviewed by: gad

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.

Get the 'sccsid' for this to match the original lines you would
get from '-r CSRG', instead of having that sccsid as a comment.
(this is the sccsid from 1996 -- there have been many changes to
printcap.c since then!)

MFC after: 15 days

Take advantage of the common_source/lp.cdefs.h file to change lpr
source to use __FBSDID() for setting rcsids. Also fix the format
of 'sccsid' lines to consistently match style(9) guidelines.

Reviewed by: discussed with bde and obrien
MFC after: 15 days

Implement new printcap option of "rc" aka "remote.resend_copies".
This is a boolean option, and if it is specified in a print queue
for a remote host, it causes lpd to resend the data file for each
copy the user requested on 'lpr -#n'. This is useful for network
printers which accept lpd-style jobs, but which ignore the control
file (and thus they ignore any request for multiple copies).

PR: 25635
Reviewed by: short review on freebsd-audit
MFC after: 6 days

Fix about 90-100 warnings one gets when trying to compile lpr&friends
with BDECFLAGS on, mainly by adding 'const' to parameters in a number
of routine declarations. While I'm at it, ANSI-fy all of the routine
declarations. The resulting object code is exactly the same after
this update as before it, with the exception of one unavoidable
change to lpd.o on freebsd/alpha.

Also added $FreeBSD$ line to lpc/extern.h lpc/lpc.h lptest/lptest.c

Reviewed by: /sbin/md5, and no feedback from freebsd-audit

Implement new printcap options of sr= (aka stat.recv) and sr= (aka stat.send)
in lpd. Stat.recv is useful on a printserver, as something of a network
performance-monitoring tool. Stat.send is a minimal accounting record of
sorts for jobs going to tcp/ip based printers.

Reviewed by: freebsd-print@bostonradio.org

$Id$ -> $FreeBSD$

lpd tries to be clever and checks if RM == my_hostname.
However, it doesn't check if the remote printer name it
is sending it to is the same as the local printer name,
and so chokes 'cos "laser" is not a real printer.

PR: 7081
Submitted by: David Malone <dwmalone@maths.tcd.ie>

Fix top-of-form bogon.

Mega lpd/lpd upgrade, part I:

- Get rid of a lot of the static variables which were shared by
many routines and programs in the suite.
- Create an abstract interface to the printcap database, so that
other retrieval and iteration mechanisms could be developed
(e.g., YP, Hesiod, or automatic retrieval from a trusted server).
- Give each capability a human-readable name in addition to the historic
two-character one.
- Otherwise generally clean up a lot of dark corners. Many still remain.
- When submitting jobs, use the official login name record (from getlogin())
if there is one, rather than reverse-mapping the uid.

More to come...

Cleanup.

The removed files are no longer needed, they are actually labelled as
``Use only if you are not 4.4BSD''. (Yeah, the ol' crufty printcap.c
is really gone!)

Properly declare all external objects in files ending in .h, as
opposed to embed them into files ending in .c.

Vendor-branch import of the 4.4BSD-Lite2 code for lpr. There are
several bugfixes in it that are worth considering.

Don't be alarmed about the import conflicts...

Obtained from: 4.4BSD-Lite2

BSD 4.4 Lite usr.sbin Sources