-removes all soqtviewer references -create a quarter adaptor class which implements missing functionality -adopts freecad code to make use of SoRenderManager and changed View3DInventorViewer interface
git-svn-id: https://free-cad.svn.sourceforge.net/svnroot/free-cad/trunk@5000 e8eeb9e2-ec13-0410-a4a9-efa5cf37419d