Remove $FreeBSD$: one-line sh pattern

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

fdformat is a sysadmin command and thus its man page should be in
volume 8 instead of volume 1.

Reviewed by: imp
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D13370

usr.sbin: normalize paths using SRCTOP-relative paths or :H when possible

This simplifies make logic/output

MFC after: 1 month
Sponsored by: Dell EMC Isilon

Remove pc98 support completely.
I thank all developers and contributors for pc98.

Relnotes: yes

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.

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

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

Cleanup usr.sbin/fd* so they can compile under WARNS=6.

fdcontrol/fdcontrol.c:
- Add const constraint to an intermediate value
which is not supposed to be changed elsewhere.
fdread/fdread.c:
- Use _devname in favor of devname to avoid name
conflicit.
- -1 is less than any positive number so in order
to get the block to function, we should get the
block a little earlier.
- Cast to remove signed when we are sure that a
return value is positive, or is compared with
an positive number (tracknumber of a floppy
disk is not likely to have UINT_MAX/2 anyway)
fdread/fdutil.c:
- Use more specific initializer
fdwrite/fdwrite.c:
- Use static on format_track since it's not
referenced in other places.
- Use const char* to represent string constant.

Bump WARNS accordingly.

Add PC98 supports.

Submitted by: Watanabe Kazuhiro <CQG00620@nifty.ne.jp> (mostly)

Perform a major cleanup of the usr.sbin Makefiles.
These are not perfectly in agreement with each other style-wise, but they
are orders of orders of magnitude more consistent style-wise than before.

Make fdformat WARN=2 ready.

Fixed the world breakage in rev. 1.8 (space after -I).
While here, removed the GCCism (replaced with WARNS?=1).

Use the printstatus() function from ${.CURDIR}/../fdread/fdutil.c to
give a bit more information about up to 10 errors encountered during
formatting (unless -q has been specified, of course).

While being here, removed a bitrotten comment in the Makefile, and
kill the old Emacs local variable stuff at the end of fdformat.c
that's no longer useful anway.

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

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

Transfer speed definitions are now also found in <machine/ioctl_fd.h>.
Remove the old include file, since it used to be in a non-public place.

Added a missing ${DESTDIR}. The real problem is that stuff related to
floppy formatting is in /sys/i386/isa/fdreg.h, it should be in /usr/include
somewhere ??

Fix include path.

Make use of the new FDOPT_NORETRY facility. It does not make sense to
verify formatted tracks with fully retryng. The head should not be moved
in either case.
Also some minor copyright cleanup.

We got now floppy formatter