Port: finished util.fst.util class
Merge remote-tracking branch 'upstream/lucene_4_3_0' into lucene_4_3_0
Merge remote-tracking branch 'upstream/lucene_4_3_0' into lucene_4_3_0
Merge remote-tracking branch 'jamesblair/lucene_4_3_0' into lucene_4_3_0
Various cleanup