* moving in test, misc, code, io directories and
py/__init__.py
* py/bin/_find.py does not print to stderr anymore
* a few fixes to conftest files in other dirs
some more fixes and adjustments pending
--HG--
branch : trunk
* added some tests for implied and conflicting options
* make all Session objects inherit from the base session
* small cleanups with respect to test setup
* separate tests a bit
--HG--
branch : trunk