[Issue 18413] Document how to setup/run DMD test suite on WINDOWS

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18413

Mike Franklin <slavo5150 at yahoo.com> changed:

           What    |Removed                     |Added
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                 CC|                            |slavo5150 at yahoo.com

--- Comment #1 from Mike Franklin <slavo5150 at yahoo.com> ---
https://github.com/dlang/dmd/blob/master/appveyor.sh could provide some insight
into what is required as well.

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