Message 96166 - Python tracker

At least in Python 2.5 and 2.6 (I haven't checked newer versions), the 
PyDateTime_IMPORT() macro passes string literals to a function that
takes non-const char* parameters:

#define PyDateTime_IMPORT \
        PyDateTimeAPI = (PyDateTime_CAPI*) PyCObject_Import("datetime", \
                                                            "datetime_CAPI")

This makes it impossible to build code with warnings as errors, when
using that macro.