[ODE] collision bug found!

[Russ Smith]

STOP PRESS!

i have just found a nasty bug in the collision code. erwin - this is
most likely the source of the GeomGroup problems you were having.
it has also been the cause of the odd behaviors observed in the
boxstack demo, where boxes occasionally "pop up".

the problem is a memory corruption bug in dCollide() that occurs when
multiple contact points are being returned.

i will build a new snapshot today (saturday) or tomorrow.

eventually, we'll have ODE as CVS on q12.org, which will make it easier
for other people to contribute.

russ.

--
Russell Smith
http://www.q12.org