[Issue 20127] Add Support for objects with .o extension on Windows

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=20127

Basile-z <b2.temp at gmx.com> changed:

           What    |Removed                     |Added
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                 CC|                            |b2.temp at gmx.com

--- Comment #2 from Basile-z <b2.temp at gmx.com> ---
There's no reason for DMD to filter "*.o" out, especially since the compiler
does nothing with them but passing them to the linker, which then presumably
checks the file headers in details.

lld-link also accepts "*.o" files BTW.

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