One down, three to go

I managed to knock off another failing test for integrating importlib into Py3K; test_pkg. That leaves three: test_coding, test_pep263, and test_runpy. The first two have something to do with the BOM and probably how I am trying to figure out the encoding of the source file. Test_runpy has something to do with relative imports. Hopefully solving test_coding or test_pep263 will knock the other one off, meaning I only have two bugs left to deal with by June 1.