Remove $FreeBSD$: one-line sh pattern

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

unzip: swtich to bsdunzip from libarchive

Unzip from FreeBSD has been ported to libarchive.
Change usr.bin/unzip to use bsdunzip from libarchive.

Differential Revision: https://reviews.freebsd.org/D41239
PR: 272845 (exp-run)
MFC after: 1 month

Don't explicitly specify c99 or gnu99 as the default is now gnu99.

MFC after: 2 weeks

Convert to usr.bin/ to LIBADD
Reduce overlinking

A new jail(8) with a configuration file, to replace the work currently done
by /etc/rc.d/jail.

MFC r196981, r200844, r201630, r203977, r203978, r204352:

r196981 (rdivacky):

Add C/c/f/p/v switches plus a bunch of minor fixes and cleanups.

Obtained from: NetBSD

r200844 (jh):

Don't print the archive name with -p and -q options.

PR: bin/141280

r201630 (kientzle):

When restoring files, use the mode for the mode.

Thanks to: Jun Kuriyama for pointing this out

r203977 (gavin):

Implement the rename query, for when a file with the same name as the one
about to be extracted already exists. The question, and interpretation
of the response is deliberately compatible with Info-Zip.

This change was originally obtained from NetBSD, but has three changes:
- better compatibility with Info-Zip in the handling of ^D
- Use getdelim() rather than getline()
- bug fix: != changed to == in the "file rename" code

I suspect the latter is also a bug in NetBSD, but I can't easily confirm
this.

PR: bin/143307
Reviewed by: rdivacky (change to unzip.c only)
Obtained from: NetBSD src/usr.bin/unzip/unzip.c 1.8

r203978 (gavin):

Bump .Dd for r203977

r204352 (ru):

Fixed static linkage.

==

Requested by: Alex Kozlov <spam rm-rf kiev ua>

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.

Fixed static linkage.

Build usr.bin/ with WARNS=6 by default.

Also add some missing $FreeBSD$ to keep svn happy.

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

Welcome unzip(1), a pure BSD drop-in replacement for ports/unzip. In its
current state, it can handle all but four of the 991 zip files (including
jar files) I was able to identify in the ports tree. The remaining four
are two self-extracting archives and two which have garbage preceding the
first local header. This limitation is a feature of libarchive(3) which
I am currently working to resolve.

The code is unnecessarily large due to the need to emulate the exact
command-line syntax and behaviour of ports/unzip. My initial incompatible
implementation was one quarter the size of the one I am committing here.