Remove $FreeBSD$: one-line bare tag

Remove /^\s*\$FreeBSD\$$\n/

A new jail(8) with a configuration file, to replace the work currently done
by /etc/rc.d/jail.

Create the altix project branch. The altix project will add support
for the SGI Altix 350 to FreeBSD/ia64. The hardware used for porting
is a two-module system, consisting of a base compute module and a
CPU expansion module. SGI's NUMAFlex architecture can be an excellent
platform to test CPU affinity and NUMA-aware features in FreeBSD.

- Import the HEAD csup code which is the basis for the cvsmode work.

- Add $FreeBSD$
- Refer to the README files in the subdirs.

Clean up some of the tortured english in this file.

README reads:
This directory tree contains tools used for the maintenance of FreeBSD.
There are no Makefile structure, but possibly Makefiles in some of the
subdirs.
Nothing show be installed from here and into the running system.
This directory should contain only subdirs and this file.