[clang] [Driver] Print C++ standard library info (PR #207798)

[via cfe-commits]

trcrsired wrote:

Looks like this PR breaks code because it changes the 
```
  // MSVC STL paths are added from AddClangSystemIncludeArgs during normal
  // compilation to preserve clang-cl header search order.
  if (DriverArgs.hasArg(options::OPT_print_cxx_stdlib_include_dirs) &&
      !DriverArgs.hasArg(options::OPT_stdlib_EQ))
    AddMSVCStdlibIncludeArgs(DriverArgs, CC1Args);
```
In fact i do not use clang-cl at all but only clang++

https://github.com/llvm/llvm-project/pull/207798