- Update to mesa 6.5 snapshot.
    - Drop mesa-6.4.2-dprintf-to-debugprintf-for-bug180122.patch and
        mesa-6.4.2-xorg-server-uses-bad-datatypes-breaking-AMD64-fdo5835.patch
        as these are upstream now.
    - Drop mesa-6.4.1-texture-from-drawable.patch and add
        mesa-6.5-texture-from-pixmap-fixes.patch.
    - Update mesa-modular-dri-dir.patch to apply.