C# DLLs for tests

[Vincent Povirk]

> Do we have an official process on how to send patches to wine-mono? Because AFAIK there is only the github repo.

No formal process, but I prefer a pull request.

> On a side note, I'd like to make functions to test.h to handle the compilation so that doesn't need to be duplicated in every test that wants to use C# DLLs. Would that be alright?

I can't think of anything other than mscoree that would need this. If
there is, I think duplication will be fine.