Fix copyright years by hand

These are dates that admin/update-copyright did not update, or
updated incorrectly.

etc/tutorials/TUTORIAL.cn

@@ -1026,7 +1026,7 @@ using, writing, and sharing free software!
 
 本篇指南是 GNU Emacs 的一部分，并允许在下列条件的约束下发行其拷贝：
 
-   Copyright (C) 1985, 1996, 1998, 2001-2018 Free Software Foundation,
+   Copyright (C) 1985, 1996, 1998, 2001-2019 Free Software Foundation,
    Inc.
 
    本文件为 GNU Emacs 的一部分。

etc/tutorials/TUTORIAL.he

@@ -1004,7 +1004,7 @@ find-file.
 גירסה זו של השיעור הינה חלק מחבילת GNU Emacs. היא מוגנת בזכויות יוצרים
 וניתנת להעתקה והפצת עותקים בתנאים מסויימים כדלקמן:
 
-                       Copyright (C) 2010-2018 Free Software Foundation, Inc.
+                       Copyright (C) 2010-2019 Free Software Foundation, Inc.
 
 ‏GNU Emacs הינו תכנה חפשית; זכותכם להפיצו ו\או לשנותו בכפוף לתנאי
 הרשיון GNU General Public License, כפי שהוא יוצא לאור ע״י Free

etc/tutorials/TUTORIAL.nl

@@ -1239,7 +1239,7 @@ Engels origineel van de copyrightmelding en condities:
 This version of the tutorial is a part of GNU Emacs.  It is copyrighted
 and comes with permission to distribute copies on certain conditions:
 
-  Copyright (C) 1985, 1996, 1998, 2001-2018 Free Software Foundation, Inc.
+  Copyright (C) 1985, 1996, 1998, 2001-2019 Free Software Foundation, Inc.
 
   This file is part of GNU Emacs.
 

etc/tutorials/TUTORIAL.ro

@@ -1082,7 +1082,7 @@ continuare noţita de copyright originală în limba engleză.
 This version of the tutorial, like GNU Emacs, is copyrighted, and
 comes with permission to distribute copies on certain conditions:
 
-Copyright (C) 1998, 2001-2018 Free Software Foundation, Inc.
+Copyright (C) 1998, 2001-2019 Free Software Foundation, Inc.
 
    Permission is granted to anyone to make or distribute verbatim copies
    of this document as received, in any medium, provided that the