Fix TypeError for PyPy

A module object is not subscriptable in PyPy. A subscriptable module is an implementation detail for CPython. The help doc only says you can use dotted notation to get attributes out of a module, it doesn't implement __getitem__. One should also not touch __builtins__ as it is an implementation detail for CPython.
Fix import for py3k
Test infrastructure fixup for pypy
Close connection before dropping tables
Use python 3.4 for the py34 envs
Merge pull request #79 from wyuenho/pypy

PyPy support