Move _Py_char2wchar from python.c to main.c.
This fixes issue #8441: python.c is not included
in the framework while main.c is and without this
patch you get a link error when building
Python.framework on OSX.
diff --git a/Include/Python.h b/Include/Python.h
index 9b26d16..8b038ac 100644
--- a/Include/Python.h
+++ b/Include/Python.h
@@ -126,7 +126,7 @@
/* _Py_Mangle is defined in compile.c */
PyAPI_FUNC(PyObject*) _Py_Mangle(PyObject *p, PyObject *name);
-/* _Py_char2wchar lives in python.c */
+/* _Py_char2wchar lives in main.c */
PyAPI_FUNC(wchar_t *) _Py_char2wchar(char *);
#ifdef __cplusplus
}