Pull up following revision(s) (requested by veego in ticket #812):

external/mit/xorg/server/drivers/xf86-video-radeon/Makefile patch
xsrc/external/mit/xf86-video-ati/dist/ChangeLog patch
xsrc/external/mit/xf86-video-ati/dist/INSTALL patch
xsrc/external/mit/xf86-video-ati/dist/Makefile.in patch
xsrc/external/mit/xf86-video-ati/dist/aclocal.m4 patch
xsrc/external/mit/xf86-video-ati/dist/config.h.in patch
xsrc/external/mit/xf86-video-ati/dist/configure patch
xsrc/external/mit/xf86-video-ati/dist/configure.ac patch
xsrc/external/mit/xf86-video-ati/dist/ltmain.sh patch
xsrc/external/mit/xf86-video-ati/dist/man/Makefile.in patch
xsrc/external/mit/xf86-video-ati/dist/man/radeon.man patch
xsrc/external/mit/xf86-video-ati/dist/src/Makefile.am patch
xsrc/external/mit/xf86-video-ati/dist/src/Makefile.in patch
xsrc/external/mit/xf86-video-ati/dist/src/ati.c patch
xsrc/external/mit/xf86-video-ati/dist/src/ati.h patch
xsrc/external/mit/xf86-video-ati/dist/src/ati_pciids_gen.h patch
xsrc/external/mit/xf86-video-ati/dist/src/atipciids.h patch
xsrc/external/mit/xf86-video-ati/dist/src/atombios_crtc.c patch
xsrc/external/mit/xf86-video-ati/dist/src/atombios_output.c patch
xsrc/external/mit/xf86-video-ati/dist/src/cayman_reg.h patch
xsrc/external/mit/xf86-video-ati/dist/src/cayman_shader.c patch
xsrc/external/mit/xf86-video-ati/dist/src/compat-api.h patch
xsrc/external/mit/xf86-video-ati/dist/src/drmmode_display.c patch
xsrc/external/mit/xf86-video-ati/dist/src/drmmode_display.h patch
xsrc/external/mit/xf86-video-ati/dist/src/evergreen_accel.c patch
xsrc/external/mit/xf86-video-ati/dist/src/evergreen_exa.c patch
xsrc/external/mit/xf86-video-ati/dist/src/evergreen_reg.h patch
xsrc/external/mit/xf86-video-ati/dist/src/evergreen_shader.c patch
xsrc/external/mit/xf86-video-ati/dist/src/evergreen_state.h patch
xsrc/external/mit/xf86-video-ati/dist/src/evergreen_textured_videofuncs.c patch
xsrc/external/mit/xf86-video-ati/dist/src/generic_bus.h patch
xsrc/external/mit/xf86-video-ati/dist/src/legacy_crtc.c patch
xsrc/external/mit/xf86-video-ati/dist/src/r600_exa.c patch
xsrc/external/mit/xf86-video-ati/dist/src/r600_reg.h patch
xsrc/external/mit/xf86-video-ati/dist/src/r600_shader.c patch
xsrc/external/mit/xf86-video-ati/dist/src/r600_state.h patch
xsrc/external/mit/xf86-video-ati/dist/src/r600_textured_videofuncs.c patch
xsrc/external/mit/xf86-video-ati/dist/src/r6xx_accel.c patch
xsrc/external/mit/xf86-video-ati/dist/src/radeon.h patch
xsrc/external/mit/xf86-video-ati/dist/src/radeon_accel.c patch
xsrc/external/mit/xf86-video-ati/dist/src/radeon_accelfuncs.c patch
xsrc/external/mit/xf86-video-ati/dist/src/radeon_atombios.c patch
xsrc/external/mit/xf86-video-ati/dist/src/radeon_atombios.h patch
xsrc/external/mit/xf86-video-ati/dist/src/radeon_bios.c patch
xsrc/external/mit/xf86-video-ati/dist/src/radeon_chipinfo_gen.h patch
xsrc/external/mit/xf86-video-ati/dist/src/radeon_chipset_gen.h patch
xsrc/external/mit/xf86-video-ati/dist/src/radeon_commonfuncs.c patch
xsrc/external/mit/xf86-video-ati/dist/src/radeon_crtc.c patch
xsrc/external/mit/xf86-video-ati/dist/src/radeon_cursor.c patch
xsrc/external/mit/xf86-video-ati/dist/src/radeon_dri.c patch
xsrc/external/mit/xf86-video-ati/dist/src/radeon_dri2.c patch
xsrc/external/mit/xf86-video-ati/dist/src/radeon_driver.c patch
xsrc/external/mit/xf86-video-ati/dist/src/radeon_drm.h patch
xsrc/external/mit/xf86-video-ati/dist/src/radeon_exa.c patch
xsrc/external/mit/xf86-video-ati/dist/src/radeon_exa_funcs.c patch
xsrc/external/mit/xf86-video-ati/dist/src/radeon_exa_render.c patch
xsrc/external/mit/xf86-video-ati/dist/src/radeon_exa_shared.c patch
xsrc/external/mit/xf86-video-ati/dist/src/radeon_exa_shared.h patch
xsrc/external/mit/xf86-video-ati/dist/src/radeon_kms.c patch
xsrc/external/mit/xf86-video-ati/dist/src/radeon_legacy_memory.c patch
xsrc/external/mit/xf86-video-ati/dist/src/radeon_modes.c patch
xsrc/external/mit/xf86-video-ati/dist/src/radeon_output.c patch
xsrc/external/mit/xf86-video-ati/dist/src/radeon_pci_chipset_gen.h patch
xsrc/external/mit/xf86-video-ati/dist/src/radeon_pci_device_match_gen.h patch
xsrc/external/mit/xf86-video-ati/dist/src/radeon_probe.c patch
xsrc/external/mit/xf86-video-ati/dist/src/radeon_probe.h patch
xsrc/external/mit/xf86-video-ati/dist/src/radeon_textured_video.c patch
xsrc/external/mit/xf86-video-ati/dist/src/radeon_textured_videofuncs.c patch
xsrc/external/mit/xf86-video-ati/dist/src/radeon_video.c patch
xsrc/external/mit/xf86-video-ati/dist/src/radeon_video.h patch
xsrc/external/mit/xf86-video-ati/dist/src/radeon_vip.c patch
xsrc/external/mit/xf86-video-ati/dist/src/radeon_xvmc.c patch
xsrc/external/mit/xf86-video-ati/dist/src/theatre.c patch
xsrc/external/mit/xf86-video-ati/dist/src/theatre200.c patch
xsrc/external/mit/xf86-video-ati/dist/src/theatre_detect.c patch
xsrc/external/mit/xf86-video-ati/dist/src/pcidb/ati_pciids.csv patch
xsrc/external/mit/xf86-video-ati/include/config.h patch

Update Xorg ATI driver to version 6.14.6.
[veego, ticket #812]

NetBSD note: The libdrm requirement seems to be KMS related which we do
not have.

* 6.14.6
This version requires the latest libdrm 2.4.36 release, and fixes a few
other bugs seen since 6.14.5.
* 6.14.5
- add solid picture accel
- tiling fixes
- new pci ids
- 6xx-9xx Xv improvements
- support for upcoming xserver API changes
- bug fixes