Log message:
Simply and speed up buildlink3.mk files and processing.
This changes the buildlink3.mk files to use an include guard for the
recursive include. The use of BUILDLINK_DEPTH, BUILDLINK_DEPENDS,
BUILDLINK_PACKAGES and BUILDLINK_ORDER is handled by a single new
variable BUILDLINK_TREE. Each buildlink3.mk file adds a pair of
enter/exit marker, which can be used to reconstruct the tree and
to determine first level includes. Avoiding := for large variables
(BUILDLINK_ORDER) speeds up parse time as += has linear complexity.
The include guard reduces system time by avoiding reading files over and
over again. For complex packages this reduces both %user and %sys time to
half of the former time.

Log message:
Merge cube-native-xorg, so that pkgsrc-current can be used with the native
X.Org found in NetBSD-current.

Thanks a lot to all who helped, especially Matthias Scheler who did
repeated tests on Mac OS X and older versions of NetBSD to make sure the
support for those platforms wouldn't be broken (or at least, not fatally,
as I would still expect a few hiccups here and there, because there is
only so much one can test in such limited time).

On the infrastructure side, this branch brings pkgconfig-builtin.mk, in
order to write very easily new builtin.mk files.  It can actually handle
more than just pkgconfig files, but it will provide a version if it finds
such a file.  x11.builtin.mk has also been made more useful and now all
existing (and future!) native-X11-related builtin.mk files should include
it.

Log message:
Switch master site to MASTER_SITE_XORG.

Log message:
Update to 2.0.4:

commit beafefcb82089ec0bd629a66054e2982bdcaee51
Author: James Cloos
Date:   Thu Dec 6 16:39:12 2007 -0500

    Replace static ChangeLog with dist-hook to generate from git log

commit 55dd8f55f3f99051c4579e9574c10ecc9863830e
Author: Kristian Høgsberg
Date:   Mon Oct 29 20:35:58 2007 -0400

    dri_interface.h doesn't belong here, remove function protos from xf86dri.h.

commit 28590a910f78fcdac526c61e9e427360128f3131
Author: James Cloos
Date:   Mon Sep 3 05:54:29 2007 -0400

    Add *~ to .gitignore to skip patch/emacs droppings

commit a9000b5b3756af2bddb9f3212a682ef647712ff8
Author: Alan Coopersmith
Date:   Fri Jul 14 18:56:46 2006 -0700

    renamed: .cvsignore -> .gitignore

Log message:
Import xf86driproto-2.0.2 from pkgsrc-wip.
This provides the XF86DRI extension headers from modular X.org X11
project.

The headers contain the types and functions that define the interface
between a DRI (direct rendering infrastructure) driver and driver
loader.

XXX The dependency on glproto and libdrm reflect the includes of the
packages and should be checked by configure.