$NetBSD$

Include stdlib.h when zile is not build with glibc.

--- lib/wchar.in.h.orig	2012-02-11 05:51:54.000000000 +0000
+++ lib/wchar.in.h
@@ -68,6 +68,7 @@
 # include <stddef.h>
 #endif
 #ifndef __GLIBC__
+# include <stdlib.h>	/* NetBSD */
 # include <stdio.h>
 # include <time.h>
 #endif
