Splitting RobotDriveDevRef into separate motor references.

[Russ Beavis]

I've been using LabVIEW for so long that I never bothered to learn a really cool trick about "index array" - you can resize it by extending the bottom or top edges to extract multiple items from the array without having to plop down multiple copies. Very nifty trick. I think that there are even provisions for automatically incrementing the index based on an initial value.

Russ