Move the __rand48_* declarations into rand48.h, and then hide both them

and __dorand48() and __rand48_deterministic
ok deraadt@

src/lib/libc/stdlib/drand48.c

@@ -1,4 +1,4 @@
-/*	$OpenBSD: drand48.c,v 1.5 2014/12/09 19:50:26 deraadt Exp $ */
+/*	$OpenBSD: drand48.c,v 1.6 2015/08/27 04:33:31 guenther Exp $ */
 /*
  * Copyright (c) 1993 Martin Birgmeier
  * All rights reserved.
@@ -14,8 +14,6 @@
 
 #include "rand48.h"
 
-extern unsigned short __rand48_seed[3];
-
 double
 drand48(void)
 {

src/lib/libc/stdlib/lcong48.c

@@ -1,4 +1,4 @@
-/*	$OpenBSD: lcong48.c,v 1.4 2014/12/08 21:45:20 deraadt Exp $ */
+/*	$OpenBSD: lcong48.c,v 1.5 2015/08/27 04:33:31 guenther Exp $ */
 /*
  * Copyright (c) 1993 Martin Birgmeier
  * All rights reserved.
@@ -14,10 +14,6 @@
 
 #include "rand48.h"
 
-extern unsigned short __rand48_seed[3];
-extern unsigned short __rand48_mult[3];
-extern unsigned short __rand48_add;
-
 void
 lcong48(unsigned short p[7])
 {

src/lib/libc/stdlib/lrand48.c

@@ -1,4 +1,4 @@
-/*	$OpenBSD: lrand48.c,v 1.4 2014/12/08 21:45:20 deraadt Exp $ */
+/*	$OpenBSD: lrand48.c,v 1.5 2015/08/27 04:33:31 guenther Exp $ */
 /*
  * Copyright (c) 1993 Martin Birgmeier
  * All rights reserved.
@@ -14,8 +14,6 @@
 
 #include "rand48.h"
 
-extern unsigned short __rand48_seed[3];
-
 long
 lrand48(void)
 {

src/lib/libc/stdlib/mrand48.c

@@ -1,4 +1,4 @@
-/*	$OpenBSD: mrand48.c,v 1.5 2014/12/09 00:02:18 tedu Exp $ */
+/*	$OpenBSD: mrand48.c,v 1.6 2015/08/27 04:33:31 guenther Exp $ */
 /*
  * Copyright (c) 1993 Martin Birgmeier
  * All rights reserved.
@@ -14,8 +14,6 @@
 
 #include "rand48.h"
 
-extern unsigned short __rand48_seed[3];
-
 long
 mrand48(void)
 {

src/lib/libc/stdlib/rand48.h

@@ -10,7 +10,7 @@
  * of any kind. I shall in no event be liable for anything that happens
  * to anyone/anything when using this software.
  *
- *	$OpenBSD: rand48.h,v 1.4 2014/12/08 21:45:20 deraadt Exp $
+ *	$OpenBSD: rand48.h,v 1.5 2015/08/27 04:33:31 guenther Exp $
  */
 
 #ifndef _RAND48_H_
@@ -19,8 +19,14 @@
 #include <math.h>
 #include <stdlib.h>
 
+__BEGIN_HIDDEN_DECLS
+extern unsigned short __rand48_seed[3];
+extern unsigned short __rand48_mult[3];
+extern unsigned short __rand48_add;
+
 void		__dorand48(unsigned short[3]);
 extern int	__rand48_deterministic;
+__END_HIDDEN_DECLS
 
 #define	RAND48_SEED_0	(0x330e)
 #define	RAND48_SEED_1	(0xabcd)

src/lib/libc/stdlib/seed48.c

@@ -1,4 +1,4 @@
-/*	$OpenBSD: seed48.c,v 1.4 2014/12/08 21:45:20 deraadt Exp $ */
+/*	$OpenBSD: seed48.c,v 1.5 2015/08/27 04:33:31 guenther Exp $ */
 /*
  * Copyright (c) 1993 Martin Birgmeier
  * All rights reserved.
@@ -14,10 +14,6 @@
 
 #include "rand48.h"
 
-extern unsigned short __rand48_seed[3];
-extern unsigned short __rand48_mult[3];
-extern unsigned short __rand48_add;
-
 unsigned short *
 seed48(unsigned short xseed[3])
 {

src/lib/libc/stdlib/srand48.c

@@ -1,4 +1,4 @@
-/*	$OpenBSD: srand48.c,v 1.4 2014/12/08 21:45:20 deraadt Exp $ */
+/*	$OpenBSD: srand48.c,v 1.5 2015/08/27 04:33:31 guenther Exp $ */
 /*
  * Copyright (c) 1993 Martin Birgmeier
  * All rights reserved.
@@ -14,10 +14,6 @@
 
 #include "rand48.h"
 
-extern unsigned short __rand48_seed[3];
-extern unsigned short __rand48_mult[3];
-extern unsigned short __rand48_add;
-
 int     __rand48_deterministic;
 
 void