[Issue 21944] importC: Support parsing # line marker directive extensions

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=21944

--- Comment #6 from Dlang Bot <dlang-bot at dlang.rocks> ---
@WalterBright created dlang/dmd pull request #12637 "fix Issue 21944 - ImportC:
Support parsing # line marker directive ex…" fixing this issue:

- fix Issue 21944 - importC: Support parsing # line marker directive extensions

https://github.com/dlang/dmd/pull/12637

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