* removing very old import-tests that IIRC relate to a time when there
was a custom import hook in use.
* basically py.test internal tests pass now except py3/py2 distributed
testing tests
--HG--
branch : trunk
intentions when doing "in-memory" files. Replace most usages of StringIO.
* consolidate py.io's files and tests into fewer files, make files 3k-importable
--HG--
branch : trunk