[libcxx] [libcxxabi] [libunwind] [llvm] [runtimes] Probe for -nostdlib++ and -nostdinc++ with the C compiler (PR #108357)

[Vitaly Buka via cfe-commits]

vitalybuka wrote:

Actually this PR is the case of https://lab.llvm.org/buildbot/#/builders/164/builds/3908, not https://github.com/llvm/llvm-project/pull/113491

https://github.com/llvm/llvm-project/pull/108357