Excise DL_EXPORT/DL_IMPORT from Modules/*. Required adding a prototype

for Py_Main().

Thanks to Kalle Svensson and Skip Montanaro for the patches.

Modules/_curses_panel.c

@@ -445,7 +445,7 @@ static PyMethodDef PyCurses_methods[] = {
 
 /* Initialization function for the module */
 
-DL_EXPORT(void)
+PyMODINIT_FUNC
 init_curses_panel(void)
 {
     PyObject *m, *d, *v;