help with CMake on win32

[Brad King]

Christian Ehrlicher wrote:
> No, kdewin32 is maybe getting an external lib. So no harcoding please.
> Can't you simply compile it before configure checks are done? I build it
> with scons before all other...

So even though there is a kdelibs/win directory with the complete source 
of a compatible version of kdewin32 it is still possible that one would 
choose an external alread-installed possibly incompatible version of 
kdewin32?  What is the motivation for supporting this?

-Brad