minor fixes, tests update

example/tutorial3/static_plugin.cpp

@@ -0,0 +1,17 @@
+// Copyright 2011-2012 Renato Tegon Forti
+// Copyright 2014 Renato Tegon Forti, Antony Polukhin.
+//
+// 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)
+
+// For more information, see http://www.boost.org
+
+#include <boost/config.hpp>
+#include <boost/plugin/alias.hpp>
+
+extern "C" BOOST_SYMBOL_EXPORT int sumexe(int x, int y)
+{
+   return x+y;
+}
+