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)

Expand *n't contractions.

Removed whitespace at end-of-line; no content changes. I simply did
cd src/share; find man[1-9] -type f|xargs perl -pi -e 's/[ \t]+$//'

BTW, what editors are the culprits? I'm using vim and it shows
me whitespace at EOL in troff files with a thick blue block...

Reviewed by: Silence from cvs diff -b
MFC after: 7 days

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

Prepare for mdoc(7)NG.

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

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

$Id$ -> $FreeBSD$

s/file it possible/file if possible/

Expanded cross references.

add missing cvs Id lines

Spelling police.

Minor formatting/style fixes.

Submitted by: Sandro Sigala <sandro@cat.local.net> as part of PR # 2134

Use the .Fx macro to reference FreeBSD versions in several newer man
pages.

For those of you that don't know, here is an example of how the .Fx
macro is used:

The xyzzy command first appeared in
.Fx 2.2 .

Will expand to:

The xyzzy command first appeared in FreeBSD 2.2.

Fix a bunch of spelling errors in a bunch of man pages.

Add a slightly edited version of the style document.

Add a section 9 about the kernel to out man pages.

Please help fill this out !