Remove $FreeBSD$: two-line nroff pattern

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

use .Mt to mark up email addresses consistently (part2)

PR: 191174
Submitted by: Franco Fichtner <franco@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.

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

Expand contractions.

Sort sections.

The .Nm utility

Handle NGM_PPPOE_ACNAME messages.

Submitted by: Andre Albsmeier <andre@albsmeier.net>
Approved by: julian

mdoc(7) police: minor spelling, markup and style fixes.

Mention that HISMACADDR is set in the environment of child processes

mdoc(7) police:

Avoid using parenthesis enclosure macros (.Pq and .Po/.Pc) with plain text.
Not only this slows down the mdoc(7) processing significantly, but it also
has an undesired (in this case) effect of disabling hyphenation within the
entire enclosed block.

Add a -l flag used to specify a label when no -p flag is given.
Start new sentences on new lines in pppoed.8.

MFC after: 1 week

Remove whitespace at EOL.

mdoc(7) police: removed HISTORY info from the .Os call.

mdoc(7) police: remove extraneous .Pp before and/or after .Sh.

mdoc(7) police: sort xrefs.

Correct cross-references:
ng_bpf.8 --> ng_bpf.4
ng_ether.8 --> ng_ether.4
ng_iface.8 --> ng_iface.4
ng_pppoe.8 --> ng_pppoe.4
ng_socket.8 --> ng_socket.4
ng_tty.8 --> ng_tty.4
ng_{type}.4 --> /dev/null

MFC after: 1 week

Prepare for mdoc(7)NG.

mdoc(7) police: use the new features of the Nm macro.

o Load netgraph.ko, ng_ether.ko and ng_pppoe.ko as required (I'm sure this
used not to be necessary).
o Allow ``-n ngdebug'' to specify something to pass to NgSetDebug()
and redirect NgSetDebug() output to syslog(8) in daemon() mode.
o Xref ng_ether(8) and NgSetDebug(4).
o Correct the type of the response passed to NgRecvData.

Add a ``-P pidfile'' option

pppoed(8) - a server to accept PPPoE connections