967f99b60c
already created resource manager. Due to the way the Handler stuff is set up, only the first resource manager ever created in a JVM will be wired up to handle resource: URLs and thus we have to be careful to only ever create one resource manager. git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@3499 542714f4-19e9-0310-aa3c-eee0fc999fb1