Remove $FreeBSD$: one-line sh pattern

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

Make WARNS=6 safe.

Tested with Clang 3.7.1, GCC 4.2.1 and GCC 4.8.5 on amd64.

Install <dev/agp/agpreg.h> and <dev/pci/pcireg.h> as userland headers
in /usr/include.

MFC after: 2 weeks

Add a new -e flag to pciconf(8)'s list mode to display PCI error details.
Currently this dumps the status of any error bits in the PCI status register
and PCI-express device status register. It also lists any errors indicated
by version 1 of PCI-express Advanced Error Reporting (AER).

MFC after: 1 week

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.

The last big commit: let usr.sbin/ use WARNS=6 by default.

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

- Teach pciconf(8) to list the PCI capabilities supported by each device
via a new -c flag to be used with -l. Some simple parsing code is
present for the following capabilities: Power Management, AGP, VPD,
MSI, PCI-X, HyperTransport, Vendor-specific, EHCI Debug Port, PCI-PCI
bridge subvendor ID, PCI-express, and MSI-X.
- Fix a few warnings in pciconf.c.
- Update some cruft in pciconf(8):
- PCI 2.1 is no longer a revolutionary standard, and subvendor ID's are
fairly common at this point, so reflect that.
- Header type 2 is used for PCI-CardBus bridges.
- Describe the -v option for -l after completing the basic -l description
instead of disrupting the flow in the middle.

Reviewed by: imp (partially)
MFC after: 1 week

Perform a major cleanup of the usr.sbin Makefiles.
These are not perfectly in agreement with each other style-wise, but they
are orders of orders of magnitude more consistent style-wise than before.

- Backout botched attempt to introduce MANSECT feature.
- MAN[1-9] -> MAN.

Set the default manual section for usr.sbin/ to 8.

Unbreak this file some more:

CFLAGS=+-I${.CURDIR}/../../sys -> CFLAGS+= -I${.CURDIR}/../../sys

Asked about on BSDnet:#FreeBSD by: philw@dream.webmaster.com (Phillip White)

Unbreak it. Apparently I forgot to do a make clean when testing :-(
Unfortunately, Makefile is not included in .depend.

Remove -I/sys

Oops, get the name of the new manpage right.

Actually install the new manpage.

Initial version of the user land code for the PCI config register
access functions. Written by Garrett Wollman and modified by me to
better match my view of the (PCI) world.

Submitted by: wollman