Attempted to fix SourceForge bug #1262038 boost:signals SIGSEV

svn path=/branches/RC_1_33_0/boost/boost/any.hpp; revision=31342
http://lists.boost.org/Archives/boost/2005/09/93982.php
http://lists.boost.org/Archives/boost/2005/09/93984.php

svn path=/branches/RC_1_33_0/boost/libs/any/; revision=31543