Merge branch 'wip/8-8-ghci' of gitlab.haskell.org:ghc/ghc into wip/ghc-8.8…

Authored by bgamari on Tue, Jun 4, 5:06 PM.

Description

Merge branch 'wip/8-8-ghci' of gitlab.haskell.org:ghc/ghc into wip/ghc-8.8-merges

Merged Changes

CommitAuthorDetailsCommitted
7af05bc4f6c7mgsloan/ghc-builders
Use datatype for unboxed returns when loading ghc into ghci 
Jun 3
a675f4987ec3mgsloan/ghc-builders
Extract out use of UnboxedTuples from GHCi.Leak 
Jun 3
3be420327addmgsloan/ghc-builders
Remove unnecessary uses of UnboxedTuples pragma (see #13101 / #15454) 
Jun 3
7258f41bdf8cmgsloan/ghc-builders
Add PlainPanic for throwing exceptions without depending on pprint 
Jun 3
f8d24178f30bmgsloan/ghc-builders
Have GHCi use object code for UnboxedTuples modules #15454 
Jun 3