Big update of copyright statements so they can be automatically processed to produce debian/copyright file
diff --git a/lib/decryption/decryption_impl.cc b/lib/decryption/decryption_impl.cc
index 5fa0c03..551afa4 100644
--- a/lib/decryption/decryption_impl.cc
+++ b/lib/decryption/decryption_impl.cc
@@ -1,8 +1,8 @@
/* -*- c++ -*- */
/*
* @file
- * @author Piotr Krysik <ptrkrysik@gmail.com>
- * @author Roman Khassraf <rkhassraf@gmail.com>
+ * @author (C) 2014 by Piotr Krysik <ptrkrysik@gmail.com>
+ * @author (C) 2015 by Roman Khassraf <rkhassraf@gmail.com>
* @section LICENSE
*
* Gr-gsm is free software; you can redistribute it and/or modify