Backport commit 7e09ef0 from Emacs master branch

Update copyright year to 2015
7e09ef09a479731d01b1ca46e94ddadd73ac98e3
Paul Eggert
Thu Jan 1 14:26:41 2015 -0800

doc/orgcard.tex

@@ -17,7 +17,7 @@
 \pdflayout=(0l)
 
 % Nothing else needs to be changed below this line.
-% Copyright (C) 1987, 1993, 1996-1997, 2001-2014 Free Software
+% Copyright (C) 1987, 1993, 1996-1997, 2001-2015 Free Software
 % Foundation, Inc.
 
 % This file is part of GNU Emacs.