$NetBSD$

Add a def we don't have

--- gsi.c	2011/12/02 01:43:37	1.1
+++ gsi.c	2011/12/02 01:43:54
@@ -23,6 +23,9 @@
 #include <stdio.h>
 #ifndef _WIN32
 #	include <netdb.h>
+#      ifndef AI_ADDRCONFIG
+#              define AI_ADDRCONFIG  0x20
+#      endif
 #endif
 #include <impl/i18n.h>
 #include <impl/framework.h>
