Nikolay Sivov 0f3c247e46 msxml3: Properly update xmldoc refcounts on insertBefore().
insertBefore() is able to work on nodes from different documents, so on 
adding child or sibling it's possible that libxml2 switches doc pointer 
for a node, we need to update refcounts to cover that case.
2011-03-07 13:18:55 +01:00
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