Remove $FreeBSD$: one-line sh pattern

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

Fix compilation on head and while here:
- remove unwanted whitespaces
- remove useless function ifphys()
- fix the Makefile to install it into /usr/bin

PR: 250133
Reviewed by: glebius, maxim
Approved by: glebius
Differential Revision: https://reviews.freebsd.org/D27155

NO_MAN= has been deprecated in favor of MAN= for some time, go ahead
and finish the job. ncurses is now the only Makefile in the tree that
uses it since it wasn't a simple mechanical change, and will be
addressed in a future commit.

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.

Start the dreaded NOFOO -> NO_FOO conversion.

OK'ed by: core

$Id$ -> $FreeBSD$

Revert $FreeBSD$ to $Id$

Make the long-awaited change from $Id$ to $FreeBSD$

This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore. This update would have been
insane otherwise.

Add my little `ifinfo' program. This is sort of a cross between a
diagnostic program for debugging the interface MIB and an example of
how to use same. Someday, netstat should be updated to print this
information in a prettier form.