Fix error compilation about PyEval_EvalCode and python3.3 argument. Need...

Warning and error compilation.
http://docs.python.org/3.3/c-api/veryhigh.html#PyEval_EvalCode
First argument is now PyObject *
And it's possible to convert PyCodeObject to PyObject, if PyObject contain PyCodeObject.
http://docs.python.org/3.3/c-api/code.html#PyCodeObject

Did we need to validate it?