Rationale:

The copy constructor in the base class is private.

The following facets classes have no copy constructors described in the standard, which, according to the standard, means that they are supposed to use the compiler-generated defaults. Default copy behavior is probably inappropriate. We should either make these classes uncopyable or else specify exactly what their constructors do.

Related issue: 421.

        ctype_base
        ctype
        ctype_byname
        ctype<char>
        ctype_byname<char>
        codecvt_base
        codecvt
        codecvt_byname
        num_get
        num_put
        numpunct
        numpunct_byname
        collate
        collate_byname
        time_base
        time_get
        time_get_byname
        time_put
        time_put_byname
        money_get
        money_put
        money_base
        moneypunct
        moneypunct_byname
        messages_base
        messages
        messages_byname