Small changes

__init__.py

@@ -4,10 +4,12 @@ import tensor
 import sparse
 import compile
 import gradient
-import opt
+import tensor_opt
+import scalar_opt
 
 from tensor import *
 from compile import *
-from opt import *
+from tensor_opt import *
+from scalar_opt import *
 from gradient import *
 

gof/op.py

@@ -139,10 +139,10 @@ class Op(object):
         """
         Shallow copy of this L{Op}. The inputs are the exact same, but
         the outputs are recreated because of the one-owner-per-result
-        policy. The default behavior is to call the constructor on
-        this L{Op}'s inputs.
+        policy. The default behavior is to call the constructor on this
+        L{Op}'s inputs.
 
-        To do a bottom-up copy of a graph, use clone_with_new_inputs.
+        To do a bottom-up copy of a graph, use L{clone_with_new_inputs}.
 
         @attention: If your L{Op} has additional options or a different
         constructor you probably want to override this.