(Option 2) in win32.mak, default HOST_DC to dmd

[marler8997]

No description provided.

[dlang-bot]

Thanks for your pull request, @marler8997! We are looking forward to reviewing it, and you should be hearing from a maintainer soon.

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[wilzbach]

Your tests failed on CircleCI

FYI: this is due to the recent upgrade of CircleCi to 2.0.
Rebasing to master will fix the CircleCi errors.

edit: not that it would be required for this PR, but it's always nice to see only green checks.

[andralex]

This is option 2 to...?

[wilzbach]

#7467

[JinShil]

Choosing Option 1: #7467