Better compile options for release builds
Better compile options for release builds

We don't use NaNs (because integer math) so fast math is fine. Other compile options too. In my tests this improves performance by 10-30%.

Contributes to issue CURA-4743.

alephobjects/CuraEngine,Ultimaker/CuraEngine,ROBO3D/CuraEngine,alephobjects/CuraEngine,Ultimaker/CuraEngine,ROBO3D/CuraEngine,ROBO3D/CuraEngine,alephobjects/CuraEngine