[Pixman] NOOP implementation

Søren Sandmann Pedersen sandmann at cs.au.dk
Tue May 3 04:42:41 PDT 2011

The following patches add a "noop" implementation, which is used as
topmost in the implementation hierarchy. It is supposed to contain
iterators and compositing routines that don't do anything. For
example, there is a compositing fast path for the DST operator.

This is useful because it allows more CPU specific iterators to be
added without worrying about them being selected ahead of noop


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