libqjson's cmake support

[Flavio Castelli]

On Friday 01 July 2011 00:01:15 David Faure wrote:
> kdeutils/ark/kerfuffle doesn't compile with unittests enabled, because it
> can't find the qjson library.

I've just pushed to master some changes that should fix all the historical 
problems qjson had with cmake.

Let me know if something has to be changed, I would like to release a new 
version of QJson within the next days.

Cheers
Flavio