Update VS/CLR support.

Fixes: https://github.com/boostorg/config/issues/467

include/boost/config/compiler/visualc.hpp

@@ -271,7 +271,7 @@
 #ifndef BOOST_NO_CXX11_THREAD_LOCAL
 #  define BOOST_NO_CXX11_THREAD_LOCAL
 #endif
-#ifndef BOOST_NO_SFINAE_EXPR
+#if !defined(BOOST_NO_SFINAE_EXPR) && !defined(_MSVC_LANG)
 #  define BOOST_NO_SFINAE_EXPR
 #endif
 #ifndef BOOST_NO_CXX11_REF_QUALIFIERS

include/boost/limits.hpp

@@ -59,8 +59,8 @@ namespace std
       BOOST_STATIC_CONSTANT(bool, is_integer = true);
       BOOST_STATIC_CONSTANT(bool, is_exact = true);
       BOOST_STATIC_CONSTANT(int, radix = 2);
-      static BOOST_LLT epsilon() throw() { return 0; };
-      static BOOST_LLT round_error() throw() { return 0; };
+      static BOOST_LLT epsilon() BOOST_NOEXCEPT_OR_NOTHROW { return 0; };
+      static BOOST_LLT round_error() BOOST_NOEXCEPT_OR_NOTHROW { return 0; };
 
       BOOST_STATIC_CONSTANT(int, min_exponent = 0);
       BOOST_STATIC_CONSTANT(int, min_exponent10 = 0);
@@ -72,10 +72,10 @@ namespace std
       BOOST_STATIC_CONSTANT(bool, has_signaling_NaN = false);
       BOOST_STATIC_CONSTANT(bool, has_denorm = false);
       BOOST_STATIC_CONSTANT(bool, has_denorm_loss = false);
-      static BOOST_LLT infinity() throw() { return 0; };
-      static BOOST_LLT quiet_NaN() throw() { return 0; };
-      static BOOST_LLT signaling_NaN() throw() { return 0; };
-      static BOOST_LLT denorm_min() throw() { return 0; };
+      static BOOST_LLT infinity() BOOST_NOEXCEPT_OR_NOTHROW { return 0; };
+      static BOOST_LLT quiet_NaN() BOOST_NOEXCEPT_OR_NOTHROW { return 0; };
+      static BOOST_LLT signaling_NaN() BOOST_NOEXCEPT_OR_NOTHROW { return 0; };
+      static BOOST_LLT denorm_min() BOOST_NOEXCEPT_OR_NOTHROW { return 0; };
 
       BOOST_STATIC_CONSTANT(bool, is_iec559 = false);
       BOOST_STATIC_CONSTANT(bool, is_bounded = true);
@@ -112,8 +112,8 @@ namespace std
       BOOST_STATIC_CONSTANT(bool, is_integer = true);
       BOOST_STATIC_CONSTANT(bool, is_exact = true);
       BOOST_STATIC_CONSTANT(int, radix = 2);
-      static BOOST_ULLT epsilon() throw() { return 0; };
-      static BOOST_ULLT round_error() throw() { return 0; };
+      static BOOST_ULLT epsilon() BOOST_NOEXCEPT_OR_NOTHROW { return 0; };
+      static BOOST_ULLT round_error() BOOST_NOEXCEPT_OR_NOTHROW { return 0; };
 
       BOOST_STATIC_CONSTANT(int, min_exponent = 0);
       BOOST_STATIC_CONSTANT(int, min_exponent10 = 0);
@@ -125,10 +125,10 @@ namespace std
       BOOST_STATIC_CONSTANT(bool, has_signaling_NaN = false);
       BOOST_STATIC_CONSTANT(bool, has_denorm = false);
       BOOST_STATIC_CONSTANT(bool, has_denorm_loss = false);
-      static BOOST_ULLT infinity() throw() { return 0; };
-      static BOOST_ULLT quiet_NaN() throw() { return 0; };
-      static BOOST_ULLT signaling_NaN() throw() { return 0; };
-      static BOOST_ULLT denorm_min() throw() { return 0; };
+      static BOOST_ULLT infinity() BOOST_NOEXCEPT_OR_NOTHROW { return 0; };
+      static BOOST_ULLT quiet_NaN() BOOST_NOEXCEPT_OR_NOTHROW { return 0; };
+      static BOOST_ULLT signaling_NaN() BOOST_NOEXCEPT_OR_NOTHROW { return 0; };
+      static BOOST_ULLT denorm_min() BOOST_NOEXCEPT_OR_NOTHROW { return 0; };
 
       BOOST_STATIC_CONSTANT(bool, is_iec559 = false);
       BOOST_STATIC_CONSTANT(bool, is_bounded = true);