Extract out use of UnboxedTuples from GHCi.Leak
See #13101 + #15454 (closed) for motivation. This change reduces the number of modules that need to be compiled to object code when loading GHC into GHCi.
See #13101 + #15454 (closed) for motivation. This change reduces the number of modules that need to be compiled to object code when loading GHC into GHCi.