[clang] [llvm] [Darwin][Driver][clang] apple-none-macho orders the resource directory after internal-externc-isystem when nostdlibinc is used (PR #122035)

[Ian Anderson via llvm-commits]

ian-twilightcoder wrote:

Same thing as https://github.com/llvm/llvm-project/pull/120507, but with the added unit test fixed to accept libc++ being in the SDK or in the build directory.

https://github.com/llvm/llvm-project/pull/122035