Added BOOST_ATTRIBUTE_NORETURN to suppress warnings in code calling BOOST_THROW_EXCEPTION.

[SVN r54614]

include/boost/exception/detail/attribute_noreturn.hpp

@@ -0,0 +1,17 @@
+//Copyright (c) 2009 Emil Dotchevski and Reverge Studios, Inc.
+
+//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 UUID_61531AB0680611DEADD5846855D89593
+#define UUID_61531AB0680611DEADD5846855D89593
+
+#include <boost/config.hpp>
+
+#if defined(BOOST_MSVC)
+#define BOOST_ATTRIBUTE_NORETURN __declspec(noreturn)
+#else
+#define BOOST_ATTRIBUTE_NORETURN
+#endif
+
+#endif