+ minor tweaks

+ added tests to ensure every header is includable by itself, also for compile time optimizations



[SVN r64352]

test/include/debug_dump_env.cpp

@@ -0,0 +1,11 @@
+/*=============================================================================
+    Copyright (c) 2010 Thomas Heller
+
+    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)
+==============================================================================*/
+
+//Check if files are includable without errors
+#include <boost/phoenix/debug/dump_env.hpp>
+
+int main() {}