message: Fix MSVC warning introduced by
diff: #define BOOST_THREAD_VERSION 4
  #define BOOST_THREAD_PROVIDES_EXECUTORS
  +#ifdef __clang__
  #pragma clang diagnostic push
  #pragma clang diagnostic ignored "-Wshadow"
  +#endif
  #include <boost/thread/executor.hpp>
  #include <boost/thread/future.hpp>
  +#ifdef __clang__
  #pragma clang diagnostic pop
  +#endif
  #include <boost/chrono/duration.hpp>
  #include <boost/throw_exception.hpp>
  