add findOrphanRules and mapRuleBodies
add findOrphanRules and mapRuleBodies

darcs-hash:20080219120255-1a7c6-6d2d7b75419d0d4c61572aab6e50aac161ca72ee

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