2to3/run.py: Fix compatibility issue with old Python 3.x versions (2to3 does not suport -W and -o).
2to3/run.py: Fix compatibility issue with old Python 3.x versions (2to3 does not suport -W and -o).

ProgVal/Limnoria-test,Ban3/Limnoria,Ban3/Limnoria,ProgVal/Limnoria-test