[xml] Segfault freeing doc after replaceNode() in python

[Brent Hendricks <brentmh rice edu>]

The attached script is a copy of the included python test file 
cutnpaste.py with two important differences:

1) It uses replaceNode() instead of addChild() to put the 'cut' node 
into the destination document

2) It segfaults :(

My guess is that somehow the cut/replaced node is being freed twice.  If 
I comment out the freeDoc line for either the source or target it stops 
segfaulting (but then of course, leaks memory).

Any ideas?

Thanks,
Brent
--

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 thought-stuff.  He builds his castles in the air, from air, creating
 by exertion of the imagination.  Few media of creation are so
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Attachment: replace.py
Description: application/python