GeometryKit 0.75

Hi,

I have a new version of the GeometryKit here which contains some API 
changes and is thus not usable together with the currently released 
RenderKit. Mainly, in order to get more performances, I decided to 
remove all class methods returning autoreleased objects. There are now 
also 2 quaternion classes (float and double). On the other side I 
removed the generic vector and matrix classes since they are not really 
of great value when writing 3D applications.

Nevertheless if sb is interested to get the sources, let me know!

-Phil
--
Philippe C.D. Robert
http://www.nice.ch/~phip