make test for new style exceptions run on all Python versions by not actually testing for new style exceptions :)

another Main.parse() cleanup to make sure a unicode error really comes from the parser, not from the filename decoding

--HG--
rename : tests/broken/getattr3call.pyx => tests/run/getattr3call.pyx

I didn't realize how unclean the seperation between the two was, hopefully Dag's project will clean this up soon.