Use *absolute* import now that it is required.  (Should this go into 2.5?  Hopefully not the bogus comment about using relative imports.  That was just to see if anyone was paying attention.)

Use relative imports in compiler package now that it is required.  (Should this go into 2.5 or should we do compiler.XXX?)

were some cases where an int was assumed.

Also had to change the string of the exception when dividing and int by zero.
Not sure what the best error message should be.  Currently
  5 / 0 yields the message: ZeroDivisionError: float division

That isn't entirely correct.  But I'm not sure what else to do.

Mention the builtins that Neal killed.

raw_input() -> input().  old input behavior is history (and test_builtin passes again).  It was failing due to future division.