ndnboost: Include boost::iostreams for internal use.
diff --git a/include/ndnboost/iostreams/detail/config/enable_warnings.hpp b/include/ndnboost/iostreams/detail/config/enable_warnings.hpp
new file mode 100644
index 0000000..3043c5e
--- /dev/null
+++ b/include/ndnboost/iostreams/detail/config/enable_warnings.hpp
@@ -0,0 +1,18 @@
+// (C) Copyright 2008 CodeRage, LLC (turkanis at coderage dot com)
+// (C) Copyright 2003-2007 Jonathan Turkanis
+// 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.)
+
+// See http://www.boost.org/libs/iostreams for documentation.
+
+#if defined(NDNBOOST_MSVC)
+# pragma warning(pop)
+#else
+# if NDNBOOST_WORKAROUND(__BORLANDC__, < 0x600)
+# pragma warn .8008 // Condition always true/false.
+# pragma warn .8066 // Unreachable code.
+# pragma warn .8071 // Conversion may lose significant digits.
+# pragma warn .8072 // Suspicious pointer arithmetic.
+# pragma warn .8080 // identifier declared but never used.
+# endif
+#endif