sstream support

[Steinar Bang]

>>>>> mrs@wrs.com (Mike Stump):

>   2.2. SOURCE CODE LICENSE

>   You may reproduce, prepare derivative works of, distribute and sell
>   the Software provided you grant any party that receives such a work
>   the right to license it under the terms of this license. In the case
>   of a work which is a compilation, only those component works which are
>   derivative works of the Software need to be licensed to third parties
>   under the terms of this license.

> if I understand the term cumulative.

Umm... is subclassing a "derivative work"? Or is that explicitly
disclaimed in another place?