[xslt] Rolled in some optimizations

[Daniel Veillard <veillard redhat com>]

  First welcome to the new mailing-list !

  Basically trying to avoid redoing some of the static stylesheet
element processing more than once, there is now a structure associated
to the node in node->_private where what could be computed statically
is kept.
  this may improve some of the silly benchmarks, as well as large
stylesheet processing for example the template called in a call-template
is now computed once when first reached.
  This is commited in CVS.

  Bjorn, if you have time I would be interested in the effect on
the XSLTMark output ;-)

Daniel

-- 
Daniel Veillard      | Red Hat Network http://redhat.com/products/network/
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