AMD RadeonSI & R600g Gallium3D Tests On Mesa 11.0 + DRM-Next

As some new Mesa 11.0 benchmarks to publish is looking at the performance of several Radeon GPUs on the R600g and RadeonSI Gallium3D drivers as tested out-of-the-box on Ubuntu 15.04 with the Linux 3.19 kernel and Mesa 10.5.2, then compared to the DRM-Next code for Linux 4.3 plus Mesa 11.0-rc1.