[Seaside] 3.9 and encoding

[stephane ducasse]

> Well it kinda depends. It is really two things, bug fixes and
> semantics changes and depending on point of view the semantics changes
> are a bugfix. The bug fixes surely helps but the different semantics
> in 3.8 vs. 3.9 make it hard to support Squeak 3.8 and 3.9 at the same
> time.
>
> I wasn't bashing anyone, just pointing out that the different
> semantics require different client code in 3.8 vs. 3.9.

I know. ;)
But I wanted to know if we introduced a bug or not.
String encoding is a mess. May be once we should have strings that  
know their business (encoding and all the rest).