Revert not defining NO_HIDDEN on hurd

       * sysdeps/mach/hurd/configure.ac (NO_HIDDEN): Define.
       * sysdeps/mach/hurd/configure: Regenerate.

ChangeLog

@@ -21,8 +21,6 @@
 	(__nanosleep): Rename to __libc_nanosleep.
 	(__nanosleep): Add weak_alias.
 	(nanosleep): Update alias.
-	* sysdeps/mach/hurd/configure.ac (NO_HIDDEN): Do not define.
-	* sysdeps/mach/hurd/configure: Regenerate.
 
 2015-11-24  Joseph Myers  <joseph@codesourcery.com>
 

sysdeps/mach/hurd/configure

@@ -1,5 +1,8 @@
 # This file is generated from configure.ac by Autoconf.  DO NOT EDIT!
 
+$as_echo "#define NO_HIDDEN 1" >>confdefs.h
+
+
 if test -n "$sysheaders"; then
   OLD_CPPFLAGS=$CPPFLAGS
   CPPFLAGS="$CPPFLAGS $SYSINCLUDES"

sysdeps/mach/hurd/configure.ac

@@ -1,5 +1,8 @@
 GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
 
+dnl We need this setting because of the need for PLT calls in ld.so.
+AC_DEFINE([NO_HIDDEN])
+
 if test -n "$sysheaders"; then
   OLD_CPPFLAGS=$CPPFLAGS
   CPPFLAGS="$CPPFLAGS $SYSINCLUDES"