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)

Mention the path to the README file in the header comment.

Submitted by: Rich Morin <rdm@cfcl.com>

Apparently, people do not listen for a plea to look into the
README file before making changes here. Fix them once again.

$Id$ -> $FreeBSD$

Fix script in README to actually work, empty lines produce as
much a diff as lines with the wrong stuff on it.

Add references in mtree data files to the README.

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.

These are mtree generated versions of these files using the
new mtree options.

I will be updating these shortly to remove some old stuff and add some
new stuff. These currently produce the exact same trees as they did.

Add the missing . entries to BSD.*.dist files.

New file BSD.release.dist is used for creating release area top level
directories.