[ODE] test_collision

[Bram Stolk]

Jean-Sebastien Guay wrote:


> - test_collision pops up a "bad" messagebox and then crashes

This is caused by test_dBoxTouchesBox()
ODE's efficient dBoxTouchesBox seems to be tested against a
inefficient other implementation.
The latter is picky about perpendicularity of certain vectors.
I made it less picky, so that it at least passes this test when
using double precision. Change committed to SVN.

   bram