Remove arc4random_stir() and arc4random_addrandom(), which none should

be using directly.  Well, a few rare people cloned it upstream and it
will take a bit of time for them to learn.
ok various

src/include/stdlib.h

@@ -1,4 +1,4 @@
-/*	$OpenBSD: stdlib.h,v 1.52 2013/05/31 20:59:24 ajacoutot Exp $	*/
+/*	$OpenBSD: stdlib.h,v 1.53 2013/10/21 20:33:24 deraadt Exp $	*/
 /*	$NetBSD: stdlib.h,v 1.25 1995/12/27 21:19:08 jtc Exp $	*/
 
 /*-
@@ -305,9 +305,6 @@ quad_t	 strtoq(const char *, char **, int);
 u_quad_t strtouq(const char *, char **, int);
 
 u_int32_t arc4random(void);
-void	arc4random_stir(void);
-void	arc4random_addrandom(unsigned char *, int)
-	__attribute__((__bounded__ (__string__,1,2)));
 u_int32_t arc4random_uniform(u_int32_t);
 void arc4random_buf(void *, size_t)
 	__attribute__((__bounded__ (__string__,1,2)));

src/lib/libc/crypt/Makefile.inc

@@ -1,4 +1,4 @@
-#	$OpenBSD: Makefile.inc,v 1.18 2010/10/28 08:34:37 mikeb Exp $
+#	$OpenBSD: Makefile.inc,v 1.19 2013/10/21 20:33:23 deraadt Exp $
 
 .PATH: ${LIBCSRCDIR}/arch/${MACHINE_CPU}/crypt ${LIBCSRCDIR}/crypt
 
@@ -11,5 +11,4 @@ MLINKS+=crypt.3 des_setkey.3 blowfish.3 blf_key.3 blowfish.3 blf_enc.3
 MLINKS+=blowfish.3 blf_dec.3 blowfish.3 blf_ecb_encrypt.3
 MLINKS+=blowfish.3 blf_ecb_decrypt.3 blowfish.3 blf_cbc_encrypt.3
 MLINKS+=blowfish.3 blf_cbc_decrypt.3
-MLINKS+=arc4random.3 arc4random_stir.3 arc4random.3 arc4random_addrandom.3
 MLINKS+=arc4random.3 arc4random_buf.3 arc4random.3 arc4random_uniform.3

src/lib/libc/crypt/arc4random.c

@@ -1,4 +1,4 @@
-/*	$OpenBSD: arc4random.c,v 1.25 2013/10/01 18:34:57 markus Exp $	*/
+/*	$OpenBSD: arc4random.c,v 1.26 2013/10/21 20:33:23 deraadt Exp $	*/
 
 /*
  * Copyright (c) 1996, David Mazieres <dm@uun.org>
@@ -158,31 +158,6 @@ _rs_random_u32(u_int32_t *val)
 	return;
 }
 
-void
-arc4random_stir(void)
-{
-	_ARC4_LOCK();
-	_rs_stir();
-	_ARC4_UNLOCK();
-}
-
-void
-arc4random_addrandom(u_char *dat, int datlen)
-{
-	int m;
-
-	_ARC4_LOCK();
-	if (!rs_initialized)
-		_rs_stir();
-	while (datlen > 0) {
-		m = MIN(datlen, KEYSZ + IVSZ);
-		_rs_rekey(dat, m);
-		dat += m;
-		datlen -= m;
-	}
-	_ARC4_UNLOCK();
-}
-
 u_int32_t
 arc4random(void)
 {