[clang] [clang] Implement address sanitizer on AIX (1/6) (PR #129925)

[Fangrui Song via cfe-commits]

https://github.com/MaskRay commented:

clang/test/Driver/Inputs/resource_dir/lib/aix/libclang_rt.asan-powerpc.a is the old runtime path.
Does $triple/libclang_rt.asan.a work? If yes, the new hierarchy is preferred

https://github.com/llvm/llvm-project/pull/129925