Add X.org 1.7.2 recipe. (nvidia driver is not support xorg-video abi …

…ver. 20)

	new file:   recipes-graphics/xorg-xserver/xserver-xorg.inc
	new file:   recipes-graphics/xorg-xserver/xserver-xorg/0001-use-__GLIBC__-guard-for-glibc-specific-code.patch
	new file:   recipes-graphics/xorg-xserver/xserver-xorg/macro_tweak.patch
	new file:   recipes-graphics/xorg-xserver/xserver-xorg_1.17.2.bb

Merge pull request #4 from olafc/jethro

Enable devicetree selection from machine config

Fix: WARNING: QA Issue: linux-driver-package requires /bin/bash, but …

…no providers in its RDEPENDS [file-rdeps]

Update L4T R21.2 Binary driver.

	new file:   recipes-bsp/binary-drivers/linux-driver-package_21.2.0.bb

Add glmark2 recipe.

It's intended to test for OpenGL/GLES.
	new file:   recipes-graphics/glmark2/glmark2_2014.03.bb