ORG-NEWS: Backport commit 62803a2ef from Emacs

Specify coding if Latin-1 Emacs would misinterpret.
62803a2ef134e37f1ba2c404dda15bf5e2a2a036
Paul Eggert
Sat May 24 15:23:47 2014 -0700

etc/ORG-NEWS

@@ -1,4 +1,4 @@
-ORG NEWS -- history of user-visible changes.           -*- org -*-
+ORG NEWS -- history of user-visible changes.   -*- mode: org; coding: utf-8 -*-
 
 #+LINK: doc http://orgmode.org/worg/doc.html#%s
 #+LINK: git http://orgmode.org/cgit.cgi/org-mode.git/commit/?id=%s