cdec --prelm_weights wf: rescore forest with 0-state features before prelm_beam_prune
cdec --prelm_weights wf: rescore forest with 0-state features before prelm_beam_prune

git-svn-id: 357248c53bdac2d7b36f7ee045286eb205fcf757@123 ec762483-ff6d-05da-a07a-a48fb63a330f

agesmundo/FasterCubePruning,kho/mr-cdec,agesmundo/FasterCubePruning,pks/cdec-dtrain-legacy,agesmundo/FasterCubePruning,kho/mr-cdec,agesmundo/FasterCubePruning,kho/mr-cdec,kho/mr-cdec,agesmundo/FasterCubePruning,pks/cdec-dtrain-legacy,pks/cdec-dtrain-legacy,pks/cdec-dtrain-legacy,pks/cdec-dtrain-legacy,kho/mr-cdec,agesmundo/FasterCubePruning,kho/mr-cdec,pks/cdec-dtrain-legacy