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/gets.c

@@ -1,4 +1,4 @@
-/*	$NetBSD: gets.c,v 1.16 2007/06/03 17:39:26 christos Exp $	*/
+/*	$NetBSD: gets.c,v 1.17 2012/03/15 18:22:30 christos Exp $	*/
 
 /*-
  * Copyright (c) 1990, 1993
@@ -37,7 +37,7 @@
 #if 0
 static char sccsid[] = "@(#)gets.c	8.1 (Berkeley) 6/4/93";
 #else
-__RCSID("$NetBSD: gets.c,v 1.16 2007/06/03 17:39:26 christos Exp $");
+__RCSID("$NetBSD: gets.c,v 1.17 2012/03/15 18:22:30 christos Exp $");
 #endif
 #endif /* LIBC_SCCS and not lint */
 
@@ -53,8 +53,7 @@ __RCSID("$NetBSD: gets.c,v 1.16 2007/06/03 17:39:26 christos Exp $");
 __warn_references(gets, "warning: this program uses gets(), which is unsafe.")
 
 char *
-gets(buf)
-	char *buf;
+gets(char *buf)
 {
 	int c;
 	char *s;
@@ -66,7 +65,7 @@ gets(buf)
 		if (c == EOF) {
 			if (s == buf) {
 				FUNLOCKFILE(stdin);
-				return (NULL);
+				return NULL;
 			} else {
 				break;
 			}
@@ -76,5 +75,5 @@ gets(buf)
 	}
 	*s = 0;
 	FUNLOCKFILE(stdin);
-	return (buf);
+	return buf;
 }