[project @ 2000-07-07 12:13:43 by simonpj]
This commit moves the instance environment out of the Class data structure, where it was immutable, to part of the type-checker environment. This change is absolutely essential as part of our move to GHCi, and I think it's also going to be necessary for Andrei's work on generic functions. As part of this change, we can remove a) types/InstEnv.* (thereby also removing a hi-boot loop) b) a tc-fixpoint-loop in TcModule Both of these are worthwhile simplifications.