[gdk-pixbuf] Add licence header

[Matthias Clasen <matthiasc src gnome org>]

commit 3339fd7c575fcc743d7ee07257befbe3fa4d9f37
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Mar 12 20:43:55 2015 -0400

    Add licence header

 tests/pixbuf-composite.c |   20 ++++++++++++++++++++
 1 files changed, 20 insertions(+), 0 deletions(-)
---
diff --git a/tests/pixbuf-composite.c b/tests/pixbuf-composite.c
index ecc3f81..e8b70fd 100644
--- a/tests/pixbuf-composite.c
+++ b/tests/pixbuf-composite.c
@@ -1,3 +1,23 @@
+/* GdkPixbuf library - test compositing
+ *
+ * Copyright (C) 2015 Red Hat, Inc.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Matthias Clasen
+ */
+
 #include <gdk-pixbuf.h>
 #include "test-common.h"