[gtksourceview] Add missing license

[Jesse van den Kieboom <jessevdk src gnome org>]

commit b731b0d02fda011e475e0aa826d0f907bd3c6ea0
Author: Garrett Regier <alias301 gmail com>
Date:   Mon May 3 20:14:46 2010 -0700

    Add missing license
    
    https://bugzilla.gnome.org/show_bug.cgi?id=617599

 gtksourceview/gtksourcegutter-private.h |   21 +++++++++++++++++++++
 1 files changed, 21 insertions(+), 0 deletions(-)
---
diff --git a/gtksourceview/gtksourcegutter-private.h b/gtksourceview/gtksourcegutter-private.h
index bd96a78..6a78b05 100644
--- a/gtksourceview/gtksourcegutter-private.h
+++ b/gtksourceview/gtksourcegutter-private.h
@@ -1,3 +1,24 @@
+/*
+ * gtksourcegutter.h
+ * This file is part of gtksourceview
+ *
+ * Copyright (C) 2009 - 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
+ */
+
 #ifndef __GTK_SOURCE_GUTTER_PRIVATE_H__
 #define __GTK_SOURCE_GUTTER_PRIVATE_H__