[PATCH 5/6] d3d10/effect: Handle special $SKIP semantic in stream output declaration.

[Matteo Bruni]

Signed-off-by: Matteo Bruni <mbruni at codeweavers.com>
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It would be interesting to test stream out declarations with output
slots and semantic indices, to exercise the parser completely.

Of course, ideally we should verify the declaration that ends in the
geometry shader and d3d. Annoyingly, there seems to be no way to get
the stream out declaration back from d3d. That probably means that we
need test the whole thing i.e. draw with stream out and check that the
streamed data matches expectations.

Something for a rainy day I guess...