Added boost header

test/external/boost/xpressive/detail/utility/dont_care.hpp

@@ -0,0 +1,25 @@
+///////////////////////////////////////////////////////////////////////////////
+// dont_care.hpp
+//
+//  Copyright 2008 Eric Niebler. 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_XPRESSIVE_DETAIL_UTILITY_DONT_CARE_HPP_EAN_10_04_2005
+#define BOOST_XPRESSIVE_DETAIL_UTILITY_DONT_CARE_HPP_EAN_10_04_2005
+
+namespace boost { namespace xpressive { namespace detail
+{
+    ///////////////////////////////////////////////////////////////////////////////
+    // for function arguments we don't care about
+    struct dont_care
+    {
+        dont_care() {}
+
+        template<typename T>
+        dont_care(T const &) {}
+    };
+
+}}}
+
+#endif