[gtk+] Update copyright year

[Matthias Clasen <matthiasc src gnome org>]

commit 915d70c56138f2d5e197153e3cd943d75b068ef2
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Nov 9 13:39:48 2013 -0500

    Update copyright year

 demos/gtk-demo/application.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/demos/gtk-demo/application.c b/demos/gtk-demo/application.c
index d250586..bdd35bf 100644
--- a/demos/gtk-demo/application.c
+++ b/demos/gtk-demo/application.c
@@ -119,7 +119,7 @@ activate_about (GSimpleAction *action,
                                                      gtk_get_major_version (),
                                                      gtk_get_minor_version (),
                                                      gtk_get_micro_version ()),
-                         "copyright", "(C) 1997-2009 The GTK+ Team",
+                         "copyright", "(C) 1997-2013 The GTK+ Team",
                          "license-type", GTK_LICENSE_LGPL_2_1,
                          "website", "http://www.gtk.org";,
                          "comments", "Program to demonstrate GTK+ functions.",