Add a test to make sure selectAlso works when we have prejoins or other  situations where the find spec would be a tuple.
Add a test to make sure selectAlso works when we have prejoins or other 
situations where the find spec would be a tuple.

PyMamba/mamba-storm,petrhosek/storm,PyMamba/mamba-storm,petrhosek/storm,petrhosek/storm,PyMamba/mamba-storm