Import SpecifyShape and specify_shape in tensor

theano/ifelse.py

@@ -435,7 +435,7 @@ where, each of the optimization do the following things:
 acceptable_ops = (theano.tensor.basic.Dot,
                   theano.tensor.basic.Reshape,
                   theano.tensor.basic.Shape,
-                  theano.tensor.basic.SpecifyShape,
+                  theano.tensor.SpecifyShape,
                   theano.tensor.basic.MaxAndArgmax,
                   theano.tensor.Subtensor,
                   theano.tensor.IncSubtensor,

theano/tensor/__init__.py

@@ -65,3 +65,6 @@ from theano.tensor.sort import sort, argsort
 from theano.tensor.extra_ops import (DiffOp, bincount, squeeze,
                        repeat, bartlett, fill_diagonal, fill_diagonal_offset,
                        cumsum, cumprod)
+
+# SpecifyShape is defined in theano.compile, but should be available in tensor
+from theano.compile import SpecifyShape, specify_shape