(in fixed framerate format) with the Presents event queue in what will
hopefully be happy harmony. Also made some edits to the Presents code to
not sound like we assume things run on the AWT thread which we don't and
which is not the case in this framework.
git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@3510 542714f4-19e9-0310-aa3c-eee0fc999fb1