To run the tests on the pyboard you need to set the "test_on_pyboard"
variable to "True", and also have tools/pyboard.py available for import
(easiest is to symlink to it).
I upgraded to Python 3.4.0, so needed to make these changes. Hopefully
the tests still run with Python 3.3.x (the scripts use python3 so are
agnostic as to the subversion).
Bytecode tests are tightly coupled to the Python version, and now some
fail against Python 3.4.
