when choosing jumppoint names in Grin.Simplify, be sure to not shadow any names in scope
when choosing jumppoint names in Grin.Simplify, be sure to not shadow any names in scope

darcs-hash:20061012002757-1a7c6-3fdd4604de2d4b7d6ec292a0520def65fb7aaaa9

jimcrayne/jhc,jimcrayne/jhc,jimcrayne/jhc,jimcrayne/jhc