Fix import order that cause crash.

theano/gof/vm.py

@@ -889,6 +889,7 @@ class VM_Linker(link.LocalLinker):
                 if not hasattr(thunks[-1], 'lazy'):
                     # We don't want all ops maker to think about lazy Ops.
                     # So if they didn't specify that its lazy or not, it isn't.
+                    # If this member isn't present, it will crash later.
                     thunks[-1].lazy = False
             except Exception, e:
                 e.args = ("The following error happened while"

theano/tests/test_tutorial.py

@@ -976,11 +976,11 @@ class T_using_gpu(unittest.TestCase):
 
     def test_using_gpu_pycudaop(self):
         import theano.misc.pycuda_init
-        from pycuda.compiler import SourceModule
-        import theano.sandbox.cuda as cuda
         if not theano.misc.pycuda_init.pycuda_available:
             raise SkipTest("Pycuda not installed. Skip test of theano op"
                            " with pycuda code.")
+        from pycuda.compiler import SourceModule
+        import theano.sandbox.cuda as cuda
 
         import theano.sandbox.cuda as cuda_ndarray
         if not cuda_ndarray.cuda_available: