Add forgotten Changelog entries for

Add forgotten Changelog entries for

        * parser.c (cp_parser_cast_expression): Use %q#T instead of %qT
        in old-style cast diagnostic.
        * typeck.c (maybe_warn_about_useless_cast): Use %q#T instead of %qT
        in useless cast diagnostic.
        * error.c (type_to_string): Remove enum special handling.

        * g++.dg/cpp1z/direct-enum-init1.C: Revert special enum handling.
        * g++.dg/warn/pr12242.C: Likewise.

From-SVN: r250232