Pull up following revision(s) (requested by mrg in ticket #339):
	external/mit/xf86-video-intel/dist/src/sna/kgem.c: patch
	external/mit/xf86-video-nv/dist/src/nv_driver.c: revision 1.6
	external/mit/xf86-video-radeonhd/dist/src/rhd_video.h: revision 1.2
	external/mit/xf86-video-radeonhd/dist/src/r6xx_accel.h: revision 1.2
Nuke bogus redefinitions of uint32/64_t.
Fix format strings for uint32_t.