[I18n-sig] Support for "wide" Unicode characters

[Martin v. Loewis]

>     * ord() will now accept surrogate pairs and return the ordinal of
>       the "wide" character.  

I'm still -1 on this.

>         ISSUE: Should sys.maxunicode be TOPCHAR or 2**32-1 or even
>               2**31 on wide builds?

It should be TOPCHAR, the maximum value that unichr accepts.

Regards,
Martin