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/xxmodule.c b/Modules/xxmodule.c
index 2264dfb..125d2ec 100644
--- a/Modules/xxmodule.c
+++ b/Modules/xxmodule.c
@@ -218,7 +218,7 @@
 
 /* Initialization function for the module (*must* be called initxx) */
 
-DL_EXPORT(void)
+PyMODINIT_FUNC
 initxx(void)
 {
 	PyObject *m;