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)

Fix types of time_second and time_uptime variables.

Assorted markup fixes and minor wordsmithing.

Approved by: re

Fixed punctuation in xrefs.

Scheduled mdoc(7) sweep.

Bring kernel time variable and access function docs up to date by
updating the list of variables and mentioning the bin(up)time functions.

Assorted markup, spelling, and grammar fixes.

mdoc(7) police:

* correctly place parenthisized sentences
* remove hard sentence breaks
* use .Vt instead of .Fn

Mdoc Janitor:

* Fix hard sentence breaks.

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.

mdoc(7) police: sort SEE ALSO xrefs (sort -b -f +2 -3 +1 -2).

mdoc(7) police: split punctuation characters + misc fixes.

Prepare for mdoc(7)NG.

Avoid use of direct troff requests in mdoc(7) manual pages.

$Id$ -> $FreeBSD$

Add $Id$, to make it simpler for members of the translation teams to
track.

The $Id$ line is normally at the bottom of the main comment block in the
man page, separated from the rest of the manpage by an empty comment,
like so;

.\" $Id$
.\"

If the immediately preceding comment is a @(#) format ID marker than the
the $Id$ will line up underneath it with no intervening blank lines.
Otherwise, an additional blank line is inserted.

Approved by: bde

Add time(9) to document the kernel time variables. Obtained from
NetBSD and then modified by me to reflect some FreeBSD specific
things and to clarify some other pointed based on some old mail
from Bruce Evans about this man page.