PoseTransform filters the output data sent to haptic devices.
Does not yet filter all the data.
Finishes the filter functions for PoseTransform.
PoseTransform caches the NamedData indices.
PoseTransform setters are thread-safe.
Bugfix in PoseTransform, filters initial input data.
Cleans up PoseTransform unit tests.  Checks all filtered data.
Reverts MultiAxisDevice to a DeviceInterface.

Device filters do not need a CommonDevice as the input device.
Adds DataStructures::DataNames namespace in NamedData.h.

Has static const C-strings for common data names.
cpplint fixes for long lines and trailing whitespace.
In PoseTransformTest and PhantomScaffold.
Style fixes for constant data names in NamedData.h: all-caps.
Style fix in PoseTransformTest, use all-caps for constants.
Bugfix, initialize all member variables in PoseTransform constructor.
And in the right order.
Fix mangled header text in PoseTransform.
Remove unneeded functions from Mock object in PoseTransformTest.