Enable constexpr on msvc-14.1 version 19.16

include/boost/mp11/detail/config.hpp

@@ -90,7 +90,7 @@
 # undef BOOST_MP11_MSVC
 # define BOOST_MP11_MSVC _MSC_VER
 
-# if BOOST_MP11_WORKAROUND( BOOST_MP11_MSVC, < 1920 )
+# if BOOST_MP11_WORKAROUND( BOOST_MP11_MSVC, < 1916 )
 #  define BOOST_MP11_NO_CONSTEXPR
 # endif
 

test/mp_for_each.cpp

@@ -10,6 +10,7 @@
 
 #if BOOST_MP11_MSVC
 # pragma warning( disable: 4503 ) // decorated name length exceeded
+# pragma warning( disable: 4307 ) // '*': integral constant overflow
 #endif
 
 #include <boost/mp11/algorithm.hpp>