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/rbtree.c b/src/rbtree.c
index f0ebb8c..211978f 100644
--- a/src/rbtree.c
+++ b/src/rbtree.c
@@ -2,7 +2,9 @@
Red Black Trees
(C) 1999 Andrea Arcangeli <andrea@suse.de>
(C) 2002 David Woodhouse <dwmw2@infradead.org>
-
+
+ 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