OMG! It's a new year already! ;)

Update the copyright.

COPYRIGHT

@@ -1,7 +1,7 @@
 The btpd software is distributed under the following terms:
 
-Copyright (c) 2005
-Richard Nyberg <rnyberg@murmeldjur.se>. All rights reserved.
+Copyright (c) 2005, 2006
+        Richard Nyberg <rnyberg@murmeldjur.se>. All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions