Remove $FreeBSD$: one-line sh pattern

Remove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/

Fix build with -DNO_ROOT

The inclusion of 0a0f7486413c broke the build with the -DNO_ROOT option.
Specifically, that commit adds some relative paths (with `..`) to METALOG
that make other tools using that log, fail afterwards (tar, makefs...).

It's been argued[1] if this is really something mtree(8) should handle more
graciously. In the meantime, fix the breakage but changing the order in which
the links are created: first in the parent directory, then in the
architecture-specific one.

We keep the architecture-specific directories an the links to the parent
directories. This is something that we might want to change in the future.

This commit is based on a concept patch by avg@.

[1] https://lists.freebsd.org/archives/dev-commits-src-all/2021-November/index.html

Reported by: bapt@, emaste@
Approved by: avg@
Fixes: 0a0f7486413c
Differential Revision: https://reviews.freebsd.org/D33126

man: Build manpages for all architectures

Building and installing architecture-specific man pages only raises a number of
problems:

* The https://www.freebsd.org/cgi/man.cgi is incomplete. As an
example, it does not show results for pae(4). The reason for this is
that the cgi interface runs on FreeBSD amd64.

* In FreeBSD amd64 some manual pages have broken X-refs. See hptrr(4)
for an example.

* Also, we have broken links in our Release Notes. This is a
consequence of the first point. See
https://www.freebsd.org/releases/13.0R/hardware/#proc-i386.

Make MAN_ARCH default to 'all' so we build all the man pages for all the
architectures. The difference in disk space is negligible. Also link
architecture-specific man pages to their own section while keeping their own
namespace.

PR: 212290
Reported by: mj@bsdops.com
Approved by: ceri@, wosch@
MFC after: 4 weeks

Create a package for apm(8).

Sponsored by: The FreeBSD Foundation

A new jail(8) with a configuration file, to replace the work currently done
by /etc/rc.d/jail.

MFtbemd:

Prefer MACHNE_CPUARCH to MACHINE_ARCH in most contexts where you want
to test of all the CPUs of a given family conform.

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.

The last big commit: let usr.sbin/ use WARNS=6 by default.

Copy apm(4) emulation from sys/i386/acpica/acpi_machdep.c and
install apm(8) and apm_bios.h on amd64.

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

Check for >= 255 since sign extension from byte to u_int sometimes makes
the value for "unknown" 0xffffffff. The underlying kernel drivers should
be updated to only return 255 but the ABI is used by too many userland
utilities.

Also, make this WARNS 6 compatible.

Mark APM manpages as i386-only.

Remove the zzz files since they have been moved to src/usr.sbin/zzz

Change zzz to be a shell script that checks for APM or ACPI support and
suspends the system appropriately.

Submitted by: Mark Santcroos <marks@ripe.net>

style.Makefile(5)

- Backout botched attempt to introduce MANSECT feature.
- MAN[1-9] -> MAN.

Set the default manual section for usr.sbin/ to 8.

Fixed breakage of installation of zzz.8 in previous commit. MLINKS
consists of pairs of link names.

Add MLINK for apmconf(8).

Suggested by: msmith

$Id$ -> $FreeBSD$

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.

delete MANDIR=/usr/share/man/man,
it breaks `env MANDIR=<dir> make maninstall'

make the right link to "zzz"

The latest user-land changes from the author. I added a big warning to the
apm.4 man-page. I also hope the Makefiles make sense now.

Submitted by: HOSOKAWA Tatsumi

Stop "make install" from falling over if DESTDIR is defined.

Laptop Advanced Power Management support (userland end) by HOSOKAWA Tatsumi.

Submitted by: HOSOKAWA Tatsumi