[Issue 15438] -m64 not added to command line in DMD x64 build

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=15438

Manu <turkeyman at gmail.com> changed:

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

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