vtkPythonInterpreter: support initialization with argc/argv
With Python 3.8, the new PyConfig structure may be used to set up
Python before it is ready. With Python 3.10, this is now effectively
mandatory as Py_Main(argc, argv) will ignore any previously prepared
configuration and instead use the arguments to initialize the
interpreter state.
Instead, put the arguments into PyConfig (or manually before Python
3.8).
Edited by Ben Boeckel