Remove $FreeBSD$: two-line nroff pattern

Remove /^\.\\"\n\.\\"\s*\$FreeBSD\$$\n/

elfdump: Add -E to test if a file is an ELF binary.

This is intended to replace potentially unreliable checks like:

file -b $1 | grep -q '^ELF ..-bit .SB executable'

Reviewed by: emaste
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D15971

Fix a typo.

MFC after: 3 days

use .Mt to mark up email addresses consistently (part3)

PR: 191174
Submitted by: Franco Fichtner <franco at lastsummer.de>

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.

Use the newly brought %U macro.

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

Sort sections.

Added the EXIT STATUS section where appropriate.

Synchronize usage() and SYNOPSIS, and fix them (flags are not
optional here). Sort options. Print the file name on error.

mdoc(7) police: Revision.

Spellcheck.

Add a man page.