Review Request: only install CMakeParseArguments.cmake for cmake versions that do not have it

[Ralf Jung]

Hi,

> Yes, most probably.
> 
> 
> I guess it was first developed as a standalone tool, where you have to do
> everything yourself, including searching for Qt4 etc., and then was added
> into kdebase.
Checking the other cmake files of libkephal, it does not seem to support 
standalone builds anymore.
I will remove the unnecessary lines, test again, and then commit if nobody 
objects.

Kind regards,
Ralf