[glibc/maskray/lld] Sync move-if-change from Gnulib

[glibc/maskray/lld] Sync move-if-change from Gnulib

[Fangrui Song]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=ba741225381d7b3206331a7a9271d370108b727c

commit ba741225381d7b3206331a7a9271d370108b727c
Author: Paul Eggert <eggert@cs.ucla.edu>
Date:   Sat Jan 2 12:43:58 2021 -0800

    Sync move-if-change from Gnulib
    
    This alters move-if-change so that its --version option outputs
    the correct copyright date automatically.  One less thing
    to update by hand.

Diff:
---
 scripts/move-if-change | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/scripts/move-if-change b/scripts/move-if-change
index 9538fdbac2..e85e90af50 100755
--- a/scripts/move-if-change
+++ b/scripts/move-if-change
@@ -8,7 +8,7 @@ VERSION='2018-03-07 03:47'; # UTC
 # If you change this file with Emacs, please let the write hook
 # do its job.  Otherwise, update this string manually.
 
-# Copyright (C) 2002-2019 Free Software Foundation, Inc.
+# Copyright (C) 2002-2021 Free Software Foundation, Inc.
 
 # 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
@@ -36,9 +36,10 @@ The variable CMPPROG can be used to specify an alternative to 'cmp'.
 
 Report bugs to <bug-gnulib@gnu.org>."
 
+year=`expr "$VERSION" : '\([^-]*\)'`
 version=`expr "$VERSION" : '\([^ ]*\)'`
 version="move-if-change (gnulib) $version
-Copyright (C) 2011 Free Software Foundation, Inc.
+Copyright $year Free Software Foundation, Inc.
 License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>
 This is free software: you are free to change and redistribute it.
 There is NO WARRANTY, to the extent permitted by law."