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/stdio/clrerr.c

@@ -1,4 +1,4 @@
-/*	$NetBSD: clrerr.c,v 1.10 2003/08/07 16:43:21 agc Exp $	*/
+/*	$NetBSD: clrerr.c,v 1.11 2012/03/15 18:22:30 christos Exp $	*/
 
 /*-
  * Copyright (c) 1990, 1993
@@ -37,7 +37,7 @@
 #if 0
 static char sccsid[] = "@(#)clrerr.c	8.1 (Berkeley) 6/4/93";
 #endif
-__RCSID("$NetBSD: clrerr.c,v 1.10 2003/08/07 16:43:21 agc Exp $");
+__RCSID("$NetBSD: clrerr.c,v 1.11 2012/03/15 18:22:30 christos Exp $");
 #endif /* LIBC_SCCS and not lint */
 
 #include <assert.h>
@@ -48,8 +48,7 @@ __RCSID("$NetBSD: clrerr.c,v 1.10 2003/08/07 16:43:21 agc Exp $");
 #undef	clearerr
 
 void
-clearerr(fp)
-	FILE *fp;
+clearerr(FILE *fp)
 {
 	_DIAGASSERT(fp != NULL);