Performance improvements#36

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telemenar wants to merge 5 commits intoJazzCore:masterfrom

telemenar:performanceImprovements

Commits on Aug 10, 2015

Add new enum for mode.
Chris Pride
committed
Avoid extra copying.
Chris Pride
committed
Avoid significant memory allocation.
Chris Pride
committed
Add comments delineating python code.
Chris Pride
committed
We can handle firstNonTab in C I think.
Chris Pride
committed