Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

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

Drop unused dependencies.

Make this WARNS 2 clean, and fix up the manual page:

Avoid implicit function calls by adding the proper include files.
Use const char copyright.
Fix some fprint formatting.

In the manual page:

Use the .Pa macro for filenames and locations.
Kill hard setence breaks.
Make use of the .Tn and .Dq macros.
Add some to text to the otherwise blank HISTORY section (taken from CVS).

Perform a major cleanup of the usr.sbin Makefiles.
These are not perfectly in agreement with each other style-wise, but they
are orders of orders of magnitude more consistent style-wise than before.

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

Set the default manual section for usr.sbin/ to 8.

$Id$ -> $FreeBSD$

Revert $FreeBSD$ to $Id$

Make the long-awaited change from $Id$ to $FreeBSD$

This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore. This update would have been
insane otherwise.

Reviewed by: julian and Mike Mitchel
Submitted by: john Hay (John.Hay@csir.co.za)

John's IPXrouted..
this has not yet been seen to run correctly with Mike's IPX/SPX
code (he has his own)
bringing them both in is the first step in merging the two packages
for 2.2