Fix setUV and setUV2 to refer to correct variables
Merge pull request #308 from NVIDIA/setUV-fix

Fix setUV and setUV2 to refer to correct variables
Move functions from closure to prototype so they will be better optimized

Being able to reuse the same member function object for all objects makes
a big difference on current V8. The total effect from changing just these
three bottleneck functions is about 5-10% less CPU usage on the ARM
platform. This seems to be worth losing a little bit of encapsulation.
Merge pull request #309 from NVIDIA/js-optimization

Move functions from closure to prototype so they will be better optimized
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