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	Some Template Haskell fixes
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* Tidy up conversion from TH.Name to RdrName.RdrName. It was partly
  duplicated between Convert.thRdrName and TcSplice.lookupThName.
  Now it's all in one place: Convert.thRdrName

* Fix a bug in TH.tupleTypeName/TH.tupleDataName (GHC.Tuple -> Data.Tuple)

* Export appEs from Language.Haskell.TH