Merge alpha100 branch back to main trunk
diff --git a/Modules/md5c.c b/Modules/md5c.c
index ffa0f0f..d7c7e4f 100644
--- a/Modules/md5c.c
+++ b/Modules/md5c.c
@@ -23,6 +23,9 @@
 documentation and/or software.
  */
 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
 #include "md5.h"
 
 /* Constants for MD5Transform routine.