Added address of statechart maintainer.

[SVN r33017]

libs/maintainers.txt

@@ -47,6 +47,7 @@ serialization         Robert Ramey <ramey -at- rrsd.com>
 signals               Douglas Gregor <dgregor -at- cs.indiana.edu>
 smart_ptr             Beman Dawes <bdawes -at- acm.org>, Peter Dimov <pdimov -at- mmltd.net>
 spirit                Joel de Guzman <djowel -at- gmail.com>
+statechart            Andreas Huber <ahd6974-groups -at- yahoo.com>
 static_assert         John Maddock <john -at- johnmaddock.co.uk>
 test                  Gennadiy Rozental <gennadiy.rozental -at- thomson.com>
 thread                Michael Glassford <glassfordm -at- hotmail.com>