Remove $FreeBSD$: one-line sh pattern

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

Regularize my copyright notice

o Remove All Rights Reserved from my notices
o imp@FreeBSD.org everywhere
o regularize punctiation, eliminate date ranges
o Make sure that it's clear that I don't claim All Rights reserved by listing
All Rights Reserved on same line as other copyright holders (but not
me). Other such holders are also listed last where it's clear.

Remove 'All Rights Reserved'

Remove this from some of the iXsystems stuff I did. OK'd by kmoore
at iXsystems

imported patch dedup

Awk helper script that reads in a mtree METALOG file from installworld
(and soon augmented by nanobsd), performs the actions documented in
the script, and then spits out a new mtree file suitable for feeding
to makefs.

Discussed on: arch@