[Issue 16049] core.sys.windows structs have wrong sizes and aligns

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=16049

--- Comment #3 from j...@red.email.ne.jp ---
(In reply to jiki from comment #2)
> Note that I deferred to commit a module MMSYSTEM 
> because it gets many conflicts with/without my previous commit #1574 for
> issue 15959.

Fixed.

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