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/sys/getsockopt.2

@@ -1,4 +1,4 @@
-.\"	$NetBSD: getsockopt.2,v 1.34 2009/06/29 08:38:07 wiz Exp $
+.\"	$NetBSD: getsockopt.2,v 1.35 2012/01/25 00:28:35 christos Exp $
 .\"
 .\" Copyright (c) 1983, 1991, 1993
 .\"	The Regents of the University of California.  All rights reserved.
@@ -29,7 +29,7 @@
 .\"
 .\"     @(#)getsockopt.2	8.4 (Berkeley) 5/2/95
 .\"
-.Dd June 28, 2009
+.Dd January 23, 2012
 .Dt GETSOCKOPT 2
 .Os
 .Sh NAME
@@ -167,6 +167,10 @@ and set with
 .It Dv SO_RCVTIMEO Ta "set timeout value for input"
 .It Dv SO_TIMESTAMP Ta "enables reception of a timestamp with datagrams"
 .It Dv SO_ACCEPTFILTER Ta "set accept filter on listening socket"
+.It Dv SO_NOSIGPIPE Ta
+controls generation of
+.Dv SIGPIPE
+for the socket
 .It Dv SO_TYPE Ta "get the type of the socket (get only)"
 .It Dv SO_ERROR Ta "get and clear error on the socket (get only)"
 .El