[ODE] collideAABBs question

[Tyler Streeter]

> Collisions have nothing to do with bodies.  You can use the collision API on
> geoms that aren't associated with the rest of the physics system.

I don't think that answers the question.

I think Matthew's question was why the collision check does not early
out if both bodies are 0.  It probably should.  Is there a good reason
not to early out in this situation?

Tyler