maint: move update-copyright to gnulib

* build-aux/update-copyright: Remove file.
* bootstrap.conf (gnulib_modules): Add update-copyright.
* gnulib: Update submodule to latest.

bootstrap.conf

@@ -210,6 +210,7 @@ gnulib_modules="
   unlink-busy
   unlinkdir
   unlocked-io
+  update-copyright
   uptime
   useless-if-before-free
   userspec

build-aux/update-copyright

@@ -1,62 +0,0 @@
-#!/usr/bin/perl -0777 -pi
-# Update an FSF copyright year list to include the current year.
-
-my $VERSION = '2009-07-29.13:34'; # UTC
-
-# Copyright (C) 2009 Free Software Foundation
-#
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 3, or (at your option)
-# any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-# Written by Jim Meyering
-
-use strict;
-use warnings;
-
-my ($sec, $min, $hour, $mday, $month, $year) = localtime (time());
-my $this_year = $year + 1900;
-my $holder = 'Free Software Foundation';
-
-if (/([- ])((?:\d\d)?\d\d)((?:\n\#)?\s+$holder)/s)
-  {
-    my ($sep, $last_c_year, $rest) = ($1, $2, $3);
-
-    # Handle two-digit year numbers like "98" and "99".
-    $last_c_year <= 99
-      and $last_c_year += 1900;
-
-    if ($last_c_year != $this_year)
-      {
-        if ($sep eq '-' && $last_c_year + 1 == $this_year)
-          {
-            s//-$this_year$rest/;
-          }
-        elsif ($sep eq ' ' && $last_c_year + 1 == $this_year)
-          {
-            s// $last_c_year-$this_year$rest/;
-          }
-        else
-          {
-            s//$sep$last_c_year, $this_year$rest/;
-          }
-      }
-  }
-
-# Local variables:
-# indent-tabs-mode: nil
-# eval: (add-hook 'write-file-hooks 'time-stamp)
-# time-stamp-start: "my $VERSION = '"
-# time-stamp-format: "%:y-%02m-%02d.%02H:%02M"
-# time-stamp-time-zone: "UTC"
-# time-stamp-end: "'; # UTC"
-# End: