* A module in haddock an unused constraint, now fixed and pushed to ghc-head
  This patch records the new commit in GHC repo

* genprimopcode generates a dummy Prim.hs for haddock.  But then Haddock was
  complaining about redundant constraints.  So this patch makes genprimopcode
  generate a warning-suppression OPTIONS_GHC pragma in Prim.hs