this old collision code is now deprecated, but can still be compiled in ODE_OLD_COLLISION mode.
this old collision code is now deprecated, but can still be compiled
in ODE_OLD_COLLISION mode.

added geom notification functions that are required to co-exist with
the new collision infrastructure.


forrestv/opende,forrestv/opende,forrestv/opende,forrestv/opende,forrestv/opende