Fix/Update copyright notices; Add SPDX annotation
Let's fix some erroneous/accidential references to wrong license,
update copyright information where applicable and introduce a
SPDX-License-Identifier to all files.
Change-Id: I39af26c6aaaf5c926966391f6565fc5936be21af
diff --git a/src/loggingrb.c b/src/loggingrb.c
index d3dd254..4a80cc8 100644
--- a/src/loggingrb.c
+++ b/src/loggingrb.c
@@ -4,6 +4,8 @@
* (C) 2012-2013 by Katerina Barone-Adesi
* All Rights Reserved
*
+ * SPDX-License-Identifier: GPL-2.0+
+ *
* 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