Make each stat take up one full line. This allows us to use grep

Make each stat take up one full line.  This allows us to use grep
to find and remove stats from the files so we can put less
burden on the python interpreter.

base/statistics.cc:
    Manually insert newlines into the python code so that we now have one
    stat per line.  (Make it so we can use grep -v to remove stats)
test/stattest.cc:
    update to reflect changes in how python is accessed

--HG--
extra : convert_revision : 554edcf9c795b33d00d3d15554447c8accebebfa