Rewrite CTAD and SFINAE-out overloads as the standard requires

test/string_test.cpp

@@ -456,7 +456,7 @@ int string_test()
             return 1;
       }
 
-#if __cplusplus >= 201703L
+#ifndef BOOST_CONTAINER_NO_CXX17_CTAD
       //Chect Constructor Template Auto Deduction
       {
          auto gold = StdString(string_literals<CharType>::String());