[R6RS] [r6rs-discuss] Problems with import syntax

[R. Kent Dybvig]

> Let me also point out a small error in
>
>    (and <version reference1> <version reference2> ...)
>    (or <version reference1> <version reference2> ...)
>    (not <version reference>)
>    An empty <version reference> is equivalent to ().
>
> The last line implies that
>
>    (not) = (not ())
>
> and perhaps also that
>
>    (or) = (or ())
>    (or (1)) = (or () (1))
>
> etc., none of which are right.

I've fixed this issue.

Kent