Blocked revisions 79276 via svnmerge

Python 3.1 doesn't support unicode events.

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  r79276 | victor.stinner | 2010-03-22 13:11:44 +0100 (lun., 22 mars 2010) | 7 lines

  Fix a crash in _elementtree related to lone unicode surrogates.

  Fix a segfault on:

     >>> import _elementtree
     >>> _elementtree.iterparse('/bin/sh', ("\uDC80", "\ud808\udf45"))
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