Nobody expects the Red Team

Too many changes to list, but broadly:

• Remove Intel GPU support from the compiler
• Add AMD GPU support to the compiler
• Remove Intel GPU host code
• Add AMD GPU host code
• More device instructions. From 40 to 68
• More host functions. From 48 to 184
• Add proof of concept implementation of OptiX framework
• Add minimal support of cuDNN, cuBLAS, cuSPARSE, cuFFT, NCCL, NVML
• Improve ZLUDA launcher for Windows