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/pwdmodule.c b/Modules/pwdmodule.c
index b51b7f9..cb139bb 100644
--- a/Modules/pwdmodule.c
+++ b/Modules/pwdmodule.c
@@ -157,7 +157,7 @@
 	{NULL,		NULL}		/* sentinel */
 };
 
-DL_EXPORT(void)
+PyMODINIT_FUNC
 initpwd(void)
 {
 	PyObject *m;