stabilize build system: depends, installer, boost/bdb fixes, cross targets groundwork

depends/x86_64-pc-linux-gnu/include/boost/msm/event_traits.hpp

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+// Copyright 2008 Christophe Henry
+// henry UNDERSCORE christophe AT hotmail DOT com
+// This is an extended version of the state machine available in the boost::mpl library
+// Distributed under the same license as the original.
+// Copyright for the original version:
+// Copyright 2005 David Abrahams and Aleksey Gurtovoy. Distributed
+// under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_MSM_EVENT_TRAITS_H
+#define BOOST_MSM_EVENT_TRAITS_H
+
+#include <boost/any.hpp>
+#include <boost/mpl/bool.hpp>
+
+namespace boost { namespace msm
+{
+
+template< typename Event > 
+struct is_kleene_event
+{
+  // default: no event is a kleene event (kleene: matches any event in a transitions)
+  typedef ::boost::mpl::false_ type;
+};
+
+// add this way in this namespace specializations for events which you want to use as kleene
+// requirement: a copy-constructor matching the events which will be converted to this kleene
+template<> 
+struct is_kleene_event< boost::any >
+{ 
+  typedef ::boost::mpl::true_ type;
+};
+
+} } // boost::msm
+#endif //BOOST_MSM_EVENT_TRAITS_H