Excise DL_EXPORT/DL_IMPORT from Modules/*.  Required adding a prototype
for Py_Main().

Thanks to Kalle Svensson and Skip Montanaro for the patches.
diff --git a/Modules/rgbimgmodule.c b/Modules/rgbimgmodule.c
index 596ea4f..904c64b 100644
--- a/Modules/rgbimgmodule.c
+++ b/Modules/rgbimgmodule.c
@@ -751,7 +751,7 @@
 };
 
 
-DL_EXPORT(void)
+PyMODINIT_FUNC
 initrgbimg(void)
 {
 	PyObject *m, *d;