Fix bug causing large lag in Full updates. .The problem was that I was recreating an Earth object inside the loop
over all copmets and asteroids, even though the Component itself
contains the Earth object. Fixing this caused the timing for
SkyMapComposite::updatePlanets() to go from 1.4 seconds to 0.03
seconds!.I also fixed some other minor issues in skycomponents.Note: I have committed the TIMING code that I had earlier sent to the
list as patches, so we can continue to use this information for
profiling.