Merge topic 'python-py3k'

db62b85e Merge commit Remove_vtksys_stl into python-py3k
b7308b03 Patch CommonCore python tests for py3k.
d3eb4043 Python API compatibility for py3k.
c96458b9 Make vtk/__init__.py compatible with py3k.
e1ff8866 Fix PyVTKTemplate dict compatibility methods.
16bb32d4 Add the new py3k buffer interface.
f2aebb86 Provide py3k module initialization.
4f297425 Remove vestigial "module" arg from python init.
...

Acked-by: Kitware Robot <kwrobot@kitware.com>
Reviewed-by: Ben Boeckel <ben.boeckel@kitware.com>
Reviewed-by: Andrew Maclean <andrew.amaclean@gmail.com>
Merge-request: !478