change opt name to follow our standard

theano/tensor/opt.py

@@ -1553,7 +1553,7 @@ def local_remove_useless_assert(node):
 
 @register_specialize
 @gof.local_optimizer([T.Elemwise])
-def local_alloc_elemwise(node):
+def local_elemwise_alloc(node):
     """
     elemwise(alloc(x, shp), ..., y.TensorType(BROADCAST CONDITION))
       -> elemwise(x, y.TensorType(BROADCAST CONDITION))

theano/tensor/tests/test_opt.py

@@ -2653,7 +2653,7 @@ def test_local_subtensor_of_dot():
     assert test_equality(f(d1, d2, 1), numpy.dot(d1, d2)[1:4,:,1:,1])
 
 
-class Test_local_alloc_elemwise(unittest.TestCase):
+class Test_local_elemwise_alloc(unittest.TestCase):
     dtype = config.floatX
 
     def setUp(self):