Backport micro-fix from the py3k svnmerge

Lib/unittest/runner.py

@@ -12,7 +12,7 @@ class _WritelnDecorator(object):
         self.stream = stream
 
     def __getattr__(self, attr):
-        if attr == 'stream':
+        if attr in ('stream', '__getstate__'):
             raise AttributeError(attr)
         return getattr(self.stream,attr)