Improve Python 2 compatability with "future" print_function.

Use python3 version of the print function when running
under python2. Also added "from __future__ import division"
to a few more module files.

Source/version.py

@@ -1,3 +1,5 @@
+from __future__ import division
+from __future__ import print_function
 import math
 import Source.lib as lib
 import sys, os