Flex: Performances API

[jdrese]

API performances
Check how Maya cmds vs Maya OpenMaya affects performances. As this tool is not doing anything fancy with geometries it is quite possible that keeping maya.cmds module will still provide enough good performances of code execution but we need to test if maya.OpenMaya will give better results.

Extra information
Simplest cases are irrelevant here. Flex needs to be able to update rigs with more than 1.000 geometries pieces with lots of deformers and geometry changes almost instantaneously.