Add initial support for __int128 to Config and TypeTraits

[SVN r81064]

test/boost_has_int128.ipp

@@ -0,0 +1,36 @@
+//  (C) Copyright John Maddock 2012. 
+//  Use, modification and distribution are subject to 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/config for most recent version.
+
+//  MACRO:         BOOST_HAS_INT128
+//  TITLE:         __int128
+//  DESCRIPTION:   The platform supports __int128.
+
+#include <cstdlib>
+
+
+namespace boost_has_int128{
+
+int test()
+{
+#ifdef __GNUC__
+   __extension__ __int128 lli = 0;
+   __extension__ unsigned __int128 ulli = 0u;
+#else
+   __int128 lli = 0;
+   unsigned __int128 ulli = 0u;
+#endif
+   (void)&lli;
+   (void)&ulli;
+   return 0;
+}
+
+}
+
+
+
+
+