Install Updated and Optimized Open Graphics Drivers (radeon, intel and nvidia) on Ubuntu 15.04/14.04

This PPA provides updated X (2D) and mesa (3D) free graphics drivers for radeon, intel and nvidia hardware. Updates packages provide:

* OpenGL 4.1+ support and new OpenGL extensions:

* packages built against llvm-3.6

* gallium-nine support installed by default. Read the specific section below

* VDPAU, OpenMAX IL Bellagio, VAAPI and XvMC Gallium3D accelerated video drivers
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