[Issue 24623] Rename version CppRuntime_Clang/Gcc to CppRuntime_libcxx/libstdcxx.

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=24623

--- Comment #4 from Dlang Bot <dlang-bot at dlang.rocks> ---
dlang/dmd pull request #16613 "Fix bugzilla issue 24623 followup." was merged
into master:

- 988f31a2767417c4ccb595fce493835baa121e10 by Johan Engelen:
  Fix bugzilla issue 24623 followup.
  Rename CppRuntime to _LLVM and _GNU
  Also accept c++ for cxx in target string.

https://github.com/dlang/dmd/pull/16613

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