Add mkdtemp(3)

src/include/unistd.h

@@ -1,4 +1,4 @@
-/*	$OpenBSD: unistd.h,v 1.12 1997/01/26 05:11:16 downsj Exp $ */
+/*	$OpenBSD: unistd.h,v 1.13 1997/06/20 04:10:20 millert Exp $ */
 /*	$NetBSD: unistd.h,v 1.26.4.1 1996/05/28 02:31:51 mrg Exp $	*/
 
 /*-
@@ -132,6 +132,7 @@ int	 initgroups __P((const char *, gid_t));
 int	 iruserok __P((u_int32_t, int, const char *, const char *));
 int	 lchown __P((const char *, uid_t, gid_t));
 int	 mknod __P((const char *, mode_t, dev_t));
+char	*mkdtemp __P((char *));
 int	 mkstemp __P((char *));
 char	*mktemp __P((char *));
 int	 nfssvc __P((int, void *));