Remove $FreeBSD$: two-line .h pattern

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

Use different ports in the TCP/UDP testcases with the first set and
the second set (increment the original ports by 10)

This avoids issues where the first listening socket might not be torn
down by the time it makes it to the second set of testcases.

The sockets should likely only be setup once, but this keeps in the
spirit of the original testcases, so this will be easier to backport
to ^/stable/9

MFC after: 1 week
Sponsored by: EMC / Isilon Storage Division

Fix warnings with clang/gcc

- Get rid of unused argc/argv variables in main
- Exit on failure with a return code of 1 instead of -1 with err/errx as a
return code of -1 is implementation dependent
- Bump WARNS to 6

MFC after: 5 days
Sponsored by: EMC / Isilon Storage Division

Generate temporary files with mkstemp instead of mktemp

MFC after: 1 week
Sponsored by: EMC / Isilon Storage Division

Use '%zd' format specifier for ssize_t

Found by: clang

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.

Ignore EINPROGRESS error on TCP connect(), and pick up the result of the
non-blocking connect later using select(). This case didn't trigger on
my UP test box, but did on Peter's SMP test box.

Spotted by: peter

Add a regression test for sending and writing zero bytes to sockets of
various types, as well as pipes and fifos for good measure. RELENG_6
currently passes all of these tests, but 7-CURRENT fails 0-byte writes
and sends on all stream socket types (and fifos, as they are based on
stream sockets).

Bumped into by: peter
Diagnosed by: jhb
Problem of: andre