LLVM Clang FInally Has Complete OpenMP 3.1 Support!

In our routine compiler benchmarks looking at LLVM/Clang vs. GCC, the performance has certainly gotten tight over the years but one of the areas where there's still been a large difference are in workloads that can make use of OpenMP for multi-threading. Fortunately, Clang has finally finished up its OpenMP 3.1 support...