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/main.c b/Modules/main.c
index cc07c29..cebb17b 100644
--- a/Modules/main.c
+++ b/Modules/main.c
@@ -105,7 +105,7 @@
 
 /* Main program */
 
-DL_EXPORT(int)
+int
 Py_Main(int argc, char **argv)
 {
 	int c;