Remove $FreeBSD$: two-line .h pattern

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/

ngctl: add -c (compact output) for the dot command

The output of "ngctl dot" is suitable for small netgraph networks. Even
moderate complex netgraph setups (about a dozen nodes) are hard to
understand from the .dot output, because each node and each hook are shown
as a full blown structure.

This patch allows to generate much more compact output and graphs by
omitting the extra structures for the individual hooks. Instead the names of
the hooks are labels to the edges.

Submitted by: Lutz Donnerhacke <lutz_donnerhacke.de>
Reviewed by: markj
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D21965

ngctl dot: Drop invalid trailing semi-colon

PR: 203257
Submitted by: Daniel O'Connor
Sponsored by: EMC / Isilon Storage Division

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.

getopt(3) returns -1, not EOF.

Unnest includes before forthcoming editing.

Get rid of all (but one in write.c) static size buffers.

Make this WARNS=3 clean.

Add a GraphViz-exporting ngctl(8) "dot" command. You can now create
very useful .dot files of your netgraph(4) to quickly visualize the
nodes, hooks and edges. An example of this can be found here:
http://people.freebsd.org/~green/sample-netgraph-dot.ps
If anyone would like to refine the output further, please do so.