Remove $FreeBSD$: one-line sh pattern

Remove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/

pkgbase: Create a FreeBSD-periodic package

While here put the periodic files for some utilities in their own
packages.

MFC after: 2 weeks
Sponsored by: Beckhoff Automation GmbH & Co. KG
Differential Revision: https://reviews.freebsd.org/D33454

Move defaults/periodic.conf back to a config file.

Ths prevents etcupdate and mergemaster from deleting it for now.

Approved by: re (rgrimes), will (mentor)
Differential Revision: https://reviews.freebsd.org/D16975

Move all periodic related config and scripts to usr.sbin/periodic/

This makes pkgbase easier by tagging these as CONFS so they are properly
tagged as config files.

Approved by: will (mentor)
Sponsored by: Essen Hackathon
Differential Revision: https://reviews.freebsd.org/D16553

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.

beforeinstall -> SCRIPTS.

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

$Id$ -> $FreeBSD$

Initial import of periodic executable control program.