Run admin/update-copyright.

Run admin/update-copyright.

Run admin/update-copyright.

* tutorials/TUTORIAL, tutorials/TUTORIAL.cs, tutorials/TUTORIAL.eo:
* tutorials/TUTORIAL.es, tutorials/TUTORIAL.it, tutorials/TUTORIAL.ja:
* tutorials/TUTORIAL.ko, tutorials/TUTORIAL.nl, tutorials/TUTORIAL.pl:
* tutorials/TUTORIAL.pt_BR, tutorials/TUTORIAL.ro:
* tutorials/TUTORIAL.ru, tutorials/TUTORIAL.sk, tutorials/TUTORIAL.sv:
* tutorials/TUTORIAL.th:
Avoid using ` for natural-language quotes.  Instead, work around
the problem with "\" by using non-" quotation marks appropriate
for the natural language in question, e.g., «...» for Spanish.
For English “...” could be used, but use '...' instead so that
TUTORIAL continues to be encoded in ASCII.

Otherwise Emacs can get confused and think the rest of the buffer is
a string.

* admin/notes/unicode (etc/tutorials/TUTORIAL.ko, leim/quail/hanja.el)
(leim/quail/hanja3.el, leim/quail/symbol-ksc.el):
Now utf-8, not iso-2022-7bit.  Also, files that contain non-UTF-8
characters are now encoded in utf-8-emacs, not iso-2022-7bit.
* etc/tutorials/TUTORIAL.ko, tutorials/TUTORIAL.th:
Switch from iso-2022-7bit to utf-8.
* leim/quail/cyrillic.el, leim/quail/czech.el, leim/quail/ethiopic.el:
* leim/quail/greek.el, leim/quail/hanja.el, leim/quail/hanja3.el:
* leim/quail/hebrew.el, leim/quail/lao.el, leim/quail/lrt.el:
* leim/quail/slovak.el, leim/quail/symbol-ksc.el, leim/quail/thai.el:
* leim/quail/tibetan.el, leim/quail/viqr.el, leim/quail/vntelex.el:
* leim/quail/vnvni.el, leim/quail/welsh.el:
* lisp/international/latin1-disp.el, lisp/international/mule-util.el:
* lisp/language/cyril-util.el, lisp/language/european.el:
* lisp/language/ind-util.el, lisp/language/lao-util.el, lisp/language/thai.el:
* lisp/language/tibet-util.el, lisp/language/tibetan.el:
* lisp/language/viet-util.el:
Switch from iso-2022-7bit to utf-8 or (if needed) utf-8-emacs.

Fixes: debbugs:13936

* HELLO, tutorials/TUTORIAL.ko, tutorials/TUTORIAL.th:
Add coding tag.  For TUTORIAL.th this prevents Emacs from
misinterpreting the file.