always deleting WFObj objects after rendering them to reclaim memory

git-svn-id: svn://anubis/anaglym/trunk@189 99a6e188-d820-4881-8870-2d33a10e2619

tests/bowling.lua

@@ -26,6 +26,9 @@ function init()
     --ball = ag.createSphere(0.4)
     --ball:setColor(0.2, 0.2, 0.9)
 
+--    local crate = ag.loadModel("crate")
+--    crate:setPosition(0, 20, 10)
+
     crate_texture = ag.loadTexture("crate.png")
 end