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)

mdoc: consistently spell our email addresses <foo@FreeBSD.org>

Reviewed by: ru

mount_hpfs(8): make WARNS=6 clean

PR: bin/139995
Approved by: ed (co-mentor)

Use MOPT_END in favor of MOPT_NULL, which better describes the purporse
of the macro.

Add a handy macro to represent null mount option, MOPT_NULL, and make
use of the macro in sbin/mount*'s, by replacing:

mopts[] = {
MOPT_STDOPTS,
{ NULL }
}

With:
mopts[] = {
MOPT_STDOPTS,
MOPT_NULL
}

This change will help to reduce the situation that we don't explicitly
initialize "struct mntopt"'s. It should not contribute to any
functional/logical changes as far as I can tell.

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

MAXPATHLEN includes the trailing NUL, so no need to add 1 here.

english(4) police.

s/filesystem/file system/g as discussed on -developers

Now that the kernel is able to load modules itself,
remove all the code which was trying to do so.
This code was nasty in several ways, it was hiding
the kernel bug where the kernel was unable to properly
load a module, and it was quitting if it wasn't able
to load the module. The consequence is that an ABI
breakage of the vfsconf API would have broken *every*
mount utility.

The .Nm utility

more file system > filesystem

o __P removed
o main prototype removed

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

Reviewed by: mike

Spell "FreeBSD" with "F" and "BSD" in uppercase.

mdoc(7) police: removed HISTORY info from the .Os call.

mdoc(7) police: remove extraneous .Pp before and/or after .Sh.

Removed -I${.CURDIR}/.../sys from CFLAGS.

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

Set the default manual section for sbin/ to 8.

mdoc(7) police: use the new features of the Nm macro.

mdoc(7) police: use certified section headers wherever possible.

Use Fx macro wherever possible.

First version of HPFS stuff.