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

mdoc: order prologue macros consistently by Dd/Dt/Os

Although groff_mdoc(7) gives another impression, this is the ordering
most widely used and also required by mdocml/mandoc.

Reviewed by: ru
Approved by: philip, ed (mentors)

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.

Sort sections.

Markup fixes.

Approved by: re (blanket)

SEE ALSO is the special name, and should not be taken in quotes,
since -mdoc checks for the "SEE" word only to set its variables.
In the SEE ALSO section, -mdoc automatically emits an empty line
before each new reference.

Prepare for mdoc(7)NG.

Fix up this for the build; some compatibility files have been added -
these will be submitted back to KTH for inclusion.