Remove $FreeBSD$: one-line sh pattern

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

ipf: Remove no-longer-needed NO_WARRAY_BOUNDS.

ipfilter: Move userland bits to sbin

Through fixes and improvements our ipfilter sources have diverged
enough to warrant move from contrib into sbin/ipf. Now that I'm
planning on implementing MSS clamping as in iptables it makes more
sense to move ipfilter to sbin.

This is the second of three commits of the ipfilter move.

Suggested by glebius on two occaions.

Suggested by and discussed with: glebius
Reviewed by: glebius, kp (for #network)
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D33510

ipfilter: Move kernel bits to netpfil

Through fixes and improvements our ipfilter sources have diverged
enough to warrant move from contrib into sys/netpil. Now that I'm
planning on implementing MSS clamping as in iptables it makes more
sense to move ipfilter to netpfil.

This is the first of three commits the ipfilter move.

Suggested by glebius on two occaions.

Suggested by and discussed with: glebius
Reviewed by: glebius, kp (for #network)
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D33510

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

Don't add LIBADD=ipf to libipf itself.

This had no real impact since libipf is a static INTERNALLIB. It does conflict
with an assertion I am adding for LIBADD though.

Sponsored by: EMC / Isilon Storage Division

Convert sbin/ to LIBADD
Reduce overlinking

Honour WITH and WITHOUT_INET6_SUPPORT.

Approved by: glebius (mentor)
MFC after: 3 days

Use both NO_WFORMAT and NO_WARRAY_BOUNDS for sbin/ipf, it would be too
disruptive to actually fix all the warnings, and the code hasn't been
maintained for several years.

MFC after: 1 week

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.

Switch the default WARNS level for sbin/ to 6.

Submitted by: Ulrich Spörlein

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

Fix the contents of the underneath .depend files and "make checkdpadd".

create a new build heirarchy for ipfilter tools