Remove $FreeBSD$: one-line sh pattern

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

fwcontrol: Disable -Wzero-length-bounds warnings.

firewire.h includes zero length arrays in unions that trigger this
warning.

Reviewed by: imp, emaste
Differential Revision: https://reviews.freebsd.org/D37538

usr.sbin: normalize paths using SRCTOP-relative paths or :H when possible

This simplifies make logic/output

MFC after: 1 month
Sponsored by: Dell EMC Isilon

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.

Always assign WARNS using ?=

- fix some nearby style bugs
- include Makefile.inc where it makes sense and reduces duplication

Approved by: ed (co-mentor)

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

Add MPEG2-TS/HDV support to fwcontrol.

Submitted by: Petr Holub" <hopet@ics.muni.cz>
Clean up by: mi@
Pr: 98134

Set include path.

Use fwcrom.c in /sys/dev/firewire.

Merge DV(Digital Video) support.

Import FireWire userland utility.