Revision 3575

NKSP: Added some initial floating point test cases.

* RTMath: Implemented floating point comparison methods
  fEqual32(float,float) and fEqual64(double,double)
  which take the expected floating point tolerances
  into account.

* NKSP: Allow built-in exit() function to potentially
  accept real type argument as well.

* NKSP: Added real number test cases for built-in
  functions exit(), int_to_real(), real(), real_to_int()
  and int(), as well as for the plus, minus and negate
  language operators.