Fix unpickling of Elemwise op since openmp changes.

theano/gof/op.py

@@ -805,6 +805,12 @@ class OpenMPOp(Op):
             openmp = theano.config.openmp
         self.openmp = openmp
 
+    def __setstate__(self, d):
+        self.__dict__.update(d)
+        # If we unpickle old op
+        if not hasattr(self, "openmp"):
+            self.openmp = False
+
     def c_compile_args(self):
         self.update_self_openmp()
         if self.openmp:

theano/tensor/elemwise.py

@@ -498,7 +498,7 @@ class Elemwise(OpenMPOp):
         return d
 
     def __setstate__(self, d):
-        self.__dict__.update(d)
+        super(Elemwise, self).__setstate__(d)
         self.ufunc = None
         self.nfunc = None
         if getattr(self, 'nfunc_spec', None):

theano/tensor/nnet/conv.py

@@ -547,9 +547,7 @@ class ConvOp(OpenMPOp):
         return True
 
     def __setstate__(self, d):
-        self.__dict__.update(d)
-        if not hasattr(self, "openmp"):
-            self.openmp = False
+        super(ConvOp, self).__setstate__(d)
         self._rehash()
 
     def _rehash(self):