* class.c (build_vtbl_ref_1): Use fixed_type_or_null.
        (fixed_type_or_null): See through reference vars.
        (build_base_path): Vtable contents are constant.
        * typeck.c (get_member_function_from_ptrfunc): Likewise.

        * rtti.c (emit_tinfo_decl): Call import_export_decl.
        * decl2.c (import_export_decl): Set DECL_NOT_REALLY_EXTERN on
        tinfo decls by default.  Don't mess with the builtins.

From-SVN: r53416