This gets Windows ARM64 to compile with clang-cl, which gives up to 40% performance improvements in certain scenes rendered with cycles, compared to MSVC. This is all tested using LLVM 18.1.8 and a VS2022 `vcvarsall` window. Subsequent PRs with various lib version updates, etc to go in at a later point. Pull Request: https://projects.blender.org/blender/blender/pulls/124182
When updating a library remember to: * Update the README.blender with the corresponding version.