* gl/dgobbi/python-py3k: (49 commits)
  FindPythonLibs Py3k fixes from cmake master.
  Help FindPythonLibs.cmake find Py3k on OS X.
  Fix warning when compiling with Python 3.5.
  Update wxVTKRenderWindowInteractor.py for Py3k.
  Add Py3k support for QVTKRenderWindowInteractor.py.
  Add keysyms to QVTKRenderWindowInteractor.py.
  Update the wrapper documentation for Python 3.
  The Py3K wrapping broke init args for subclasses.
  Add tests for encoded strings in python.
  For Py3k, return bytes for non-utf8 C++ strings.
  Make vtkVariantStrictWeakOrder(a,b) work with Py3k.
  Converting python examples so they also run on Py3k.
  python3: add support in IOGeoJSON and IOParallelXML tests
  A fix to enable this script to work with Py3k.
  Fix remaining py3k issues with vtk.tk module.
  Add a few other minor py3k test fixes.
  Fixing tests for Python3.
  Add a python function to check buffer equivalence.
  Fix typo PYTHON_VERSION_HEX to PY_VERSION_HEX
  Add include guard to vtkPythonCompatibility.h
  ...