update exfat from current head

Change-Id: I7d93474296612fda1dde23f6e8690668d6880e27
diff --git a/exfat/libexfat/utf.c b/exfat/libexfat/utf.c
index 3b7e26b..70fa856 100644
--- a/exfat/libexfat/utf.c
+++ b/exfat/libexfat/utf.c
@@ -3,7 +3,7 @@
 	exFAT file system implementation library.
 
 	Free exFAT implementation.
-	Copyright (C) 2010-2013  Andrew Nayenko
+	Copyright (C) 2010-2014  Andrew Nayenko
 
 	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