please update to cmake 2.4.3

[Benjamin Meyer]

[snip]
> I don't want to wait with this until after akademy.
> In Trysil the most problems people had had to do with generated files, so I
> *really* don't want to spend the week in Dublin by fixing dependency
> problems which would be working without problem with 2.4.3.
>
> So how about September 12th ?
> Makes a four week warning period, and a more than 4 month period since the
> last cmake update.
> (Changes in qt-copy or kdelibs are often done with no major announcement
> and cause much more recompilation for everybody).

September 12th sounds fine.

-Benjamin Meyer