iconv support for UTF-7

[Ulrich Drepper]

Bruno Haible <haible@ilog.fr> writes:

> I hate UTF-7 as much as you do. But since some Windows based email programs
> (in use in East Asia) like to send out UTF-7 encoded mails, it is a
> question of interoperability that Linux mail programs should support it.

OK.  The patch is in.  Thanks,

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