Flickering light decoration on moving platform
At the start of TNT Map06, is a moving platform that uses a flat that Dday's default defs attach dlights to.
As the platform moves, they notably flicker. Also looking at them seems to cause a little slowdown.
Fixed|Renderer: Moving planes need decoration update on every frame
Whenever a plane's smoothed height changes, the surface needs to be
marked for decoration update so light decorations on the plane will
be correctly placed during the move.