Enable optimization on numpy interger, not just python int.

This is needed as a previous commit changed some python int to numpy integer. This will also make the optimization happen more frequently then before.

Enable optimization on numpy interger, not just python int.
092b8e2c · Frederic Bastien · Alexander Belopolsky · 62861303 · 092b8e2c
--- a/theano/tensor/opt.py
+++ b/theano/tensor/opt.py
@@ -1625,7 +1625,7 @@ def local_useless_subtensor(node):
            except NotScalarConstantError:
                pass

-            if isinstance(idx.stop, int):
+            if isinstance(idx.stop, (int, numpy.integer)):
                if idx.stop < length_pos_data:
                    return False
            elif isinstance(idx.stop, theano.scalar.Scalar):