libexec: 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 .h pattern

Remove /^\s*\*+\s*\$FreeBSD\$.*$\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.

Remove the 3rd clause ("advertising clause") of the BSD license as
permitted by the University of Berkeley on July 22, 1999.

Reviewed by: imp
MFC after: 1 week

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.

$Id$ -> $FreeBSD$

Adds anon ftp virtual host capability to ftpd, using /etc/ftphosts for
definition of a system's virtual hosts.

Adds optional "internal ls" support for ftpd, by collecting
modules from src/bin/ls, and handling exec(_PATH_LS,..) as a
special case, very useful in an environment where many users
are given chroot access. "~/etc/{s}pwd.db" files are still
needed if uid/gid->user/group translation is desired.

To enable this it must be compiled with the make variable
FTP_INTERNAL_LS defined, either in /etc/make.conf or the
environment.

Revert $FreeBSD$ to $Id$

Make the long-awaited change from $Id$ to $FreeBSD$

This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore. This update would have been
insane otherwise.

add forgotten $Id$

Convert STATS and PARANOID to run-time options.
Document the new -R (relax paranoia) option.

From NetBSD/Lite2: code and man page cleanups, Kerberos IV hooks
(relax, we're still exportable), and /etc/ftpchroot feature for
semi-anonymous accounts

Add some functionality to ftpd so it logs all anonymous file
transfers. It only does this when -S is set.
Reviewed by:
Submitted by:
Obtained from: logdaemon package

Printing out /etc/motd when a ftp login occurs is a security hole
(as is printing out a version number at the telnet login banner).

Don't print out /etc/motd when people login, instead if present,
print out /etc/ftpmotd. It looks like 4.4lite2 has done something similar
(perhaps for different reasons) because /etc/motd no longer shows up
on vangogh.

Folks who like the old behavior can create a symbolic link to motd.

BSD 4.4 Lite Libexec Sources