Add since annotation to GHC.ByteOrder
Add since annotation to GHC.ByteOrder

(cherry picked from commit 6fb2620dbc420c976dc9da90b0efc6eae533ebff)

sdiehl/ghc,sdiehl/ghc,sdiehl/ghc,sdiehl/ghc,sdiehl/ghc,sdiehl/ghc,sdiehl/ghc