[ODE] dBodyDestroy

[coberr at scottsdaleins.com]

I would like to destroy bodies during collision if certain conditions
exist.  However, if I call dBodyDestroy from within my space collide
callback, I get the   "Invalid operation for geom in locked space error"
within the collision_kernel.cpp.

I was considering pushing all of the pending bodies to be destroyed onto a
temporary stack and deleting them after collision detection.

Is this the best approach to destroying bodies?

Thanks in advance for any help or advice