[gdk-pixbuf] thumbnailer: Add copyright header

[Bastien Nocera <hadess src gnome org>]

commit 237c5c0400dd8df7e5c680184567327a0738bebd
Author: Bastien Nocera <hadess hadess net>
Date:   Sun Feb 12 17:56:13 2017 +0100

    thumbnailer: Add copyright header

 thumbnailer/gdk-pixbuf-print-mime-types.c |   21 +++++++++++++++++++++
 1 files changed, 21 insertions(+), 0 deletions(-)
---
diff --git a/thumbnailer/gdk-pixbuf-print-mime-types.c b/thumbnailer/gdk-pixbuf-print-mime-types.c
index 0cf8393..e716ddc 100644
--- a/thumbnailer/gdk-pixbuf-print-mime-types.c
+++ b/thumbnailer/gdk-pixbuf-print-mime-types.c
@@ -1,3 +1,24 @@
+/*
+ * Copyright (C) 2016 Bastien Nocera <hadess hadess net>
+ *
+ * Authors: Bastien Nocera <hadess hadess net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ */
+
 #include <gdk-pixbuf/gdk-pixbuf.h>
 
 int main (int argc, char **argv)