More AMDGPU DC + RadeonSI/RADV vs. NVIDIA Linux OpenGL+Vulkan Benchmarks

Last week I published the Radeon RX Vega Performance With Mesa 17.3-dev + LLVM 6 + drm-next-4.15-dc article offering a fresh look at the RX Vega 56/64 Linux performance using the new AMDGPU DC code that's likely to be merged in Linux 4.15. As well, the latest Mesa 17.3-dev Git code built against LLVM 6.0 SVN while all compared to the latest NVIDIA driver. Out of that article came some premium requests to see a larger comparison, so here that is...