Added a starfield to csdemo. It looks more like space dust, that is flying by the camera. Good framerates by restricting the maximum distance of visibility and density.
Added a starfield to csdemo. It looks more like space dust, that is flying
by the camera. Good framerates by restricting the maximum distance of
visibility and density.


git-svn-id: 28d9401aa571d5108e51b194aae6f24ca5964c06@8853 8cc4aa7f-3514-0410-904f-f2cc9021211c

crystalspace/CS,crystalspace/CS,crystalspace/CS,crystalspace/CS,crystalspace/CS,crystalspace/CS,crystalspace/CS,crystalspace/CS