Merge remote-tracking branch 'origin/master'

compiler/GHC/Builtin/Names.hs

compiler/GHC/Builtin/Types.hs

compiler/GHC/Core/Opt/Pipeline.hs

compiler/GHC/Core/Opt/Simplify.hs

compiler/GHC/Core/Opt/Simplify/Env.hs

compiler/GHC/Core/Opt/Simplify/Utils.hs

compiler/GHC/Driver/Session.hs

compiler/GHC/Iface/Type.hs

compiler/GHC/Parser/Errors/Ppr.hs

compiler/GHC/Parser/Errors/Types.hs

compiler/GHC/Parser/PostProcess.hs

compiler/GHC/Tc/Errors.hs

compiler/GHC/Tc/Errors/Types.hs

compiler/GHC/Tc/Utils/Monad.hs

compiler/GHC/Tc/Validity.hs

compiler/GHC/ThToHs.hs

compiler/GHC/Types/Name.hs

compiler/GHC/Types/TyThing/Ppr.hs

compiler/GHC/Types/Var/Set.hs

compiler/GHC/Utils/Binary/Typeable.hs