test execution on Windows

[flihp]

This is a huge unknown to me but being able to execute the tests from our test harness in our Visual Studio builds seems like the right thing to do. It may however be a task for a small army so this issue only covers scoping the task. It will likely be replaced by many tickets if we do end up implementing this. Start here: https://msdn.microsoft.com/en-us/library/ms182626.aspx