fix function (look at type for dtype)

theano/scan_module/scan_utils.py

@@ -389,7 +389,7 @@ def equal_computations(xs, ys, in_xs=None, in_ys=None):
             elif (isinstance(dx, tensor.Constant) and
                   isinstance(dy, tensor.Constant)):
                 if not (numpy.all(dx.data == dy.data) and
-                        dx.dtype == dy.dtype and
+                        dx.type.dtype == dy.type.dtype and
                         dx.data.shape == dy.data.shape):
                     return False
                 else:
@@ -413,7 +413,7 @@ def equal_computations(xs, ys, in_xs=None, in_ys=None):
                         if (isinstance(dx, tensor.Constant) and
                             isinstance(dy, tensor.Constant)):
                             if not (numpy.all(dx.data == dy.data) and
-                                dx.dtype == dy.dtype and
+                                dx.type.dtype == dy.type.dtype and
                                 dx.data.shape == dy.data.shape):
                                 return False
                             else: