[ODE] svn trunk commits

[David Walters]

> That's because the new 'dMassSetTrimesh' isn't
> finished yet. At now we have to use dMassSetBox.

That isn't true - the reason 'dMassSetTrimesh' fails in GIMPACT mode
is that there is no implementation of dGeomTriMeshGetTriangleCount, it
just returns zero - so it cannot enumerate all of the triangles to
create a mass.

This function works in OPCODE mode and I assume it should be trivial
to implement for GIMPACT.

Regards,
David