Added boost header

test/external/boost/thread/once.hpp

@@ -0,0 +1,33 @@
+#ifndef BOOST_THREAD_ONCE_HPP
+#define BOOST_THREAD_ONCE_HPP
+
+//  once.hpp
+//
+//  (C) Copyright 2006-7 Anthony Williams 
+//
+//  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)
+
+#include <boost/thread/detail/platform.hpp>
+#if defined(BOOST_THREAD_PLATFORM_WIN32)
+#include <boost/thread/win32/once.hpp>
+#elif defined(BOOST_THREAD_PLATFORM_PTHREAD)
+#include <boost/thread/pthread/once.hpp>
+#else
+#error "Boost threads unavailable on this platform"
+#endif
+
+#include <boost/config/abi_prefix.hpp>
+
+namespace boost
+{
+    inline void call_once(void (*func)(),once_flag& flag)
+    {
+        call_once(flag,func);
+    }
+}
+
+#include <boost/config/abi_suffix.hpp>
+
+#endif