Update boost to 1.71 and add asio

boost/predef/language/cuda.h

@@ -0,0 +1,52 @@
+/*
+Copyright Benjamin Worpitz 2018
+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_PREDEF_LANGUAGE_CUDA_H
+#define BOOST_PREDEF_LANGUAGE_CUDA_H
+
+#include <boost/predef/version_number.h>
+#include <boost/predef/make.h>
+
+/*`
+[heading `BOOST_LANG_CUDA`]
+
+[@https://en.wikipedia.org/wiki/CUDA CUDA C/C++] language.
+If available, the version is detected as VV.RR.P.
+
+[table
+    [[__predef_symbol__] [__predef_version__]]
+
+    [[`__CUDACC__`] [__predef_detection__]]
+    [[`__CUDA__`] [__predef_detection__]]
+
+    [[`CUDA_VERSION`] [VV.RR.P]]
+    ]
+ */
+
+#define BOOST_LANG_CUDA BOOST_VERSION_NUMBER_NOT_AVAILABLE
+
+#if defined(__CUDACC__) || defined(__CUDA__)
+#   undef BOOST_LANG_CUDA
+#   include <cuda.h>
+#   if defined(CUDA_VERSION)
+#       define BOOST_LANG_CUDA BOOST_PREDEF_MAKE_10_VVRRP(CUDA_VERSION)
+#   else
+#       define BOOST_LANG_CUDA BOOST_VERSION_NUMBER_AVAILABLE
+#   endif
+#endif
+
+#if BOOST_LANG_CUDA
+#   define BOOST_LANG_CUDA_AVAILABLE
+#endif
+
+#define BOOST_LANG_CUDA_NAME "CUDA C/C++"
+
+
+#endif
+
+#include <boost/predef/detail/test.h>
+BOOST_PREDEF_DECLARE_TEST(BOOST_LANG_CUDA,BOOST_LANG_CUDA_NAME)