Fix Python 2.7 test failure where the size of numpy types was not always preserved. Numpy integer types subclass from the builtin integer type. This led to an error in the logic for deducing which DyND type should be used to hold a given Python object.
Fix Python 2.7 test failure where the size of numpy types was not always
preserved. Numpy integer types subclass from the builtin integer type.
This led to an error in the logic for deducing which DyND type should be
used to hold a given Python object.

mwiebe/dynd-python,izaid/dynd-python,ContinuumIO/dynd-python,insertinterestingnamehere/dynd-python,izaid/dynd-python,insertinterestingnamehere/dynd-python,mwiebe/dynd-python,ContinuumIO/dynd-python,mwiebe/dynd-python,ContinuumIO/dynd-python,izaid/dynd-python,insertinterestingnamehere/dynd-python,mwiebe/dynd-python,izaid/dynd-python,ContinuumIO/dynd-python,insertinterestingnamehere/dynd-python