[ODE] Possible solution to unstable rotating bodies problem

[Aras Pranckevicius]

> 64 spinning objects
> ------------------------
> no spin fix: 555.1 fps
> spin fix: 554.5 fps
> 256 spinning objects
> --------------------------
> no spin fix: 206.1 fps
> spin fix: 202.4 fps
> 1024 spinning objects
> ---------------------------
> no spin fix: 23.9 fps
> spin fix: 22.5 fps

I suggest turning renderer off to measure raw performance. Right now,
I guess, you spend most of the time submitting draw calls and/or
traversing the scene (or whatever else ogre3d does :)).

-- 
Aras 'NeARAZ' Pranckevicius
http://nesnausk.org/nearaz | http://nearaz.blogspot.com