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in guava 10, such that it creates the Set with a different initial size than it used to, which causes the resulting Set to have a different iteration order than in the passt. By constructing from an ImmutableSet (with a defined iteration order) the HashSet behaves as it used to. git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@6710 542714f4-19e9-0310-aa3c-eee0fc999fb1