Check in python script that reads the python stats output.

Check in python script that reads the python stats output.
Still needs a lot of work, but it's at least as good as the
normal output, and has some features that normal ouput is missing
such as bin totalling with correct formulas and totalling of
2d vectors and such.  It will also filter out specific stats
for printing.  (basically grep, but no mistakes.)

--HG--
extra : convert_revision : 05d0f0489483a32145cf6508122cfbc7ea57e204