[cvs-nhc98] patch applied (yhc): Add reduceRecursiveLet, alongside removeRecursiveLet, and isCoreLetRec

Fri Aug 3 08:49:07 PDT 2007 Neil Mitchell * Add reduceRecursiveLet, alongside removeRecursiveLet, and isCoreLetRec M ./src/libraries/core/Yhc/Core/Invariant.hs -5 +1 M ./src/libraries/core/Yhc/Core/Invariant/RecursiveLet.hs -6 +20