perf_builder: use appropriate python interpreter on Windows for sixonix
Created by: craftyguy
Since both Python 2 and Python 3 provide 'python.exe', this calls the py 'wrapper' to explicitly choose python3 when running sixonix
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Created by: craftyguy
Since both Python 2 and Python 3 provide 'python.exe', this calls the py 'wrapper' to explicitly choose python3 when running sixonix