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

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

The last big commit: let usr.sbin/ use WARNS=6 by default.

mixer(8) is WARNS=6 clean since 1.25.

Tested with: 'make universe'

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.

Constify and set WARNS=2.

Submitted by: Mike Barcroft <mike@q9media.com
Reviewed by: md5(1)

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

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

$Id$ -> $FreeBSD$

major modifications to the mixer. currently it doesn't report errors
that it encounters (such as invalid device), but does print usage upon
this error...

but otherwise allows complex commands such as:
mixer -f /dev/mixer4 synth line 50 -rec mic +rec line =rec cd ^rec mix

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.

Add a man page for mixer(8).

This commit was generated by cvs2svn to compensate for changes in r6448,
which included commits to RCS files with non-trunk default branches.

non-X mixer, useful into rc.local