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

[d-bugmail at puremagic.com]

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

Iain Buclaw <ibuclaw at gdcproject.org> changed:

           What    |Removed                     |Added
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             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #3 from Iain Buclaw <ibuclaw at gdcproject.org> ---
Fix committed as
https://github.com/dlang/dmd/commit/ba38f4bda14b3c92d5ef64d5221366ee7c78d944

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