[TIPC] More updates of file headers

Updated copyright notice to include the year the file was
actually created. Information about file creation dates
was extracted from the files in the old CVS repository
at tipc.sourceforge.net.

Signed-off-by: Per Liden <per.liden@nospam.ericsson.com>
diff --git a/net/tipc/ref.c b/net/tipc/ref.c
index eb5f2b2..944093f 100644
--- a/net/tipc/ref.c
+++ b/net/tipc/ref.c
@@ -1,7 +1,7 @@
 /*
  * net/tipc/ref.c: TIPC object registry code
  * 
- * Copyright (c) 2003-2006, Ericsson AB
+ * Copyright (c) 1991-2006, Ericsson AB
  * Copyright (c) 2004-2005, Wind River Systems
  * All rights reserved.
  *