Implement rand/srand in terms of random/srandom.

Code developed for glibc or older versions of bionic might expect more
randomness than the BSD implementation provides.

Bug: 15829381
Change-Id: Ia5a908a816e0a5f0639f514107a6384a51ec157e

libc/upstream-netbsd/lib/libc/stdlib/rand.c

@@ -1,57 +0,0 @@
-/*	$NetBSD: rand.c,v 1.12 2012/06/25 22:32:45 abs Exp $	*/
-
-/*-
- * Copyright (c) 1990, 1993
- *	The Regents of the University of California.  All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-#if defined(LIBC_SCCS) && !defined(lint)
-#if 0
-static char sccsid[] = "@(#)rand.c	8.1 (Berkeley) 6/14/93";
-#else
-__RCSID("$NetBSD: rand.c,v 1.12 2012/06/25 22:32:45 abs Exp $");
-#endif
-#endif /* LIBC_SCCS and not lint */
-
-#include <sys/types.h>
-#include <stdlib.h>
-
-static u_long next = 1;
-
-int
-rand(void)
-{
-	/* LINTED integer overflow */
-	return (int)((next = next * 1103515245 + 12345) % ((u_long)RAND_MAX + 1));
-}
-
-void
-srand(u_int seed)
-{
-	next = seed;
-}