Add missing sigs in FrontEnd.Syn.Traverse
Add missing sigs in FrontEnd.Syn.Traverse

darcs-hash:20090204214422-90c7a-d848be6eca6fb16feb3018c18f8d8d7128bb63bf

kirbyfan64/jhc,kirbyfan64/jhc,kirbyfan64/jhc,kirbyfan64/jhc