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)

Mechanically kill hard sentence breaks and double whitespaces.

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: split punctuation characters + misc fixes.

Prepare for mdoc(7)NG.

$Id$ -> $FreeBSD$

Document forward(1) better.

PR: docs/10126
Submitted by: Sue Blake <sue@welearn.com.au>

add missing cvs Id lines.

Add forward(5) to document the .forward file.