Patch retracted, do not use it.

Sorry, I hit "send" too soon. I don't think that my proposed patch
captures the original intent of the test, which was to compare two NaN
values with different bit patterns.

Perhaps we are seeing different behavior for the #testNaN2 method when
running Squeak on platforms with different C math libraries??? I am
using an Intel Linux system. On this system, I have:
  1.0e200 sin ==> 0.999823805637538
  1.0e200 tan ==> 1.0