> c) _PyImport_LoadDynamicModule() encodes the filename for
> _PyImport_GetDynLoadFunc(). The prototype should be changed,
> but only on Windows, to accept a filename as a Unicode string.

Hum, the difficult part is to use Unicode in _PyImport_GetDynLoadFunc() for:

hDLL = LoadLibraryEx(pathname, NULL, LOAD_WITH_ALTERED_SEARCH_PATH);

There is a LoadLibraryW() function, but it doesn't have a flag argument. And I suppose that the LOAD_WITH_ALTERED_SEARCH_PATH option is important.