[gtksourceview] Added missing license header.

[Krzesimir Nowak <krnowak src gnome org>]

commit 5394cf874fe041b5505e08612dc9b1f087b02991
Author: Krzesimir Nowak <qdlacz gmail com>
Date:   Mon Dec 20 07:20:47 2010 +0100

    Added missing license header.

 gtksourceview/gtksourcegutterrenderertext.c |   21 +++++++++++++++++++++
 1 files changed, 21 insertions(+), 0 deletions(-)
---
diff --git a/gtksourceview/gtksourcegutterrenderertext.c b/gtksourceview/gtksourcegutterrenderertext.c
index a23f4d0..18996ec 100644
--- a/gtksourceview/gtksourcegutterrenderertext.c
+++ b/gtksourceview/gtksourcegutterrenderertext.c
@@ -1,3 +1,24 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; coding: utf-8 -*-
+ * gtksourcegutterrenderertext.c
+ * This file is part of GtkSourceView
+ *
+ * Copyright (C) 2010 - Jesse van den Kieboom
+ *
+ * GtkSourceView is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * GtkSourceView 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
 #include "gtksourcegutterrenderertext.h"
 #include "gtksourceview-i18n.h"