Libraries updates and cleanup

* Updating common/lib
 * Updating lib/csu
 * Updating lib/libc
 * Updating libexec/ld.elf_so
 * Corrected test on __minix in featuretest to actually follow the
   meaning of the comment.
 * Cleaned up _REENTRANT-related defintions.
 * Disabled -D_REENTRANT for libfetch
 * Removing some unneeded __NBSD_LIBC defines and tests

Change-Id: Ic1394baef74d11b9f86b312f5ff4bbc3cbf72ce2

lib/libc/stdlib/div.c

@@ -1,4 +1,4 @@
-/*	$NetBSD: div.c,v 1.7 2003/08/07 16:43:39 agc Exp $	*/
+/*	$NetBSD: div.c,v 1.8 2012/06/25 22:32:45 abs Exp $	*/
 
 /*
  * Copyright (c) 1990, 1993
@@ -37,15 +37,14 @@
 #if 0
 static char sccsid[] = "@(#)div.c	8.1 (Berkeley) 6/4/93";
 #else
-__RCSID("$NetBSD: div.c,v 1.7 2003/08/07 16:43:39 agc Exp $");
+__RCSID("$NetBSD: div.c,v 1.8 2012/06/25 22:32:45 abs Exp $");
 #endif
 #endif /* LIBC_SCCS and not lint */
 
 #include <stdlib.h>		/* div_t */
 
 div_t
-div(num, denom)
-	int num, denom;
+div(int num, int denom)
 {
 	div_t r;