[pypy-dev] improved cpyext PyArg_ParseTuple s* and t# support

Hello, There's a pyarg-parsebuffer-new branch in the pypy bitbucket repository that improves PyArg_ParseTuple. It doesn't completely implement either of these, but it adds enough for pyOpenSSL to mostly work. Arbitrary new-style buffer support was too hard for me, so I skipped that. Still, it would be nice to have this branch in 1.5 if possible, since I think with it along with my pyOpenSSL branch, pyOpenSSL becomes mostly functional on PyPy. Can someone take a look and let me know if it's okay to merge to default? Thanks, Jean-Paul