$NetBSD4

gcc44 fixes

--- src/io/sys.cpp.orig	2008-03-11 04:20:06.000000000 +0000
+++ src/io/sys.cpp	2009-10-05 21:07:59.000000000 +0000
@@ -16,4 +16,6 @@
 #endif
 
+#include <cstdio>
+
 #include <glib/gutils.h>
 #if GLIB_CHECK_VERSION(2,6,0)
