[ODE] Memory management

[Adam D. Moss]

Megan Fox wrote:
> I might be mis-remembering, but wasn't this a change that was added to
> lend some additional stability to the sim?
> 
> (what I mean is, isn't this something that should be easy to remove,
> if needed, and would it benefit from having a switch command to turn
> it off for those that want repeatable sims at the cost of less
> stability?)

That's right, but I don't see the benefit in an option
to turn it off when we could have an (API) option to
reseed it instead for the same effect (repeatability)
without the loss of stability.

--Adam