Improved debugging

Got some debugging help implement that can also be used for scene creation. I've implemented displaying of bounding boxes, names, and axes for a given actor. All this can be enabled programtically or in the xml scene specification.

On another front i cleaner up the spawn functions to be sane. Before spawning an actor included calling back and forth between the shard and the actor. This has all been eliminated and as a side bonus made a much simpler api.