Merge commit 'origin/drm-gem' into modesetting-gem

Passed the compile test; it's ready to ship.

Conflicts:

	libdrm/Makefile.am
	linux-core/Makefile.kernel
	linux-core/drmP.h
	linux-core/drm_memrange.c
	linux-core/drm_stub.c
	shared-core/drm.h
	shared-core/i915_dma.c
	shared-core/i915_drv.h
	shared-core/i915_irq.c