Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

MFtbemd:

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

Switch the default WARNS level for sbin/ to 6.

Submitted by: Ulrich Spörlein

Bring back WARNS to 3 for arm until I figure out how to make gcc happy.

Oops... Remove the line leaked in the last commit which is not
intended to be there...

WARNS=6 cleanup:

- Initialize everything in the struct array, not only the mentioned
ones
- Unconditionally initialize hs to 0 to avoid repeatly doing so
- Cast to unsigned int when comparing to unsigned variables.

style.Makefile(5):
Use WARNS?= instead of WARNS=.

Additional PC98 option is not needed.

Default to WARNS=2.
Binary builds that cannot handle this must explicitly set WARNS=0.

Reviewed by: mike

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

Set the default manual section for sbin/ to 8.

Added pc98 support.

Submitted by: Akio Morita <amorita@meadow.scphys.kyoto-u.ac.jp>

$Id$ -> $FreeBSD$

This commit was generated by cvs2svn to compensate for changes in r37446,
which included commits to RCS files with non-trunk default branches.

Add newfs_msdos: extensive newfs-style support for creating FAT12,
FAT16, and FAT32 file systems in all their various horriblenesses.

Approved-in-concept by: joerg