merge

greentest/test_threading.py

@@ -87,6 +87,7 @@ class ThreadTests(unittest.TestCase):
         self.assertEqual(numrunning.get(), 0)
 
     # run with a small(ish) thread stack size (256kB)
+    if hasattr(threading, 'stack_size'):
         def test_various_ops_small_stack(self):
             if verbose:
                 print 'with 256kB thread stack size...'