HEADS UP: New primops in HEAD

New comparison primops are now in HEAD. This change breaks backwards compatibility for comparison primops. What you need to do after pulling the latest HEAD is: 1) Upgrade to latest versions of Alex and Happy (cabal update && cabal install alex happy). 2) Rebase your branches on top of HEAD, if these branches were in a repository affected by primop change. Repositories that will were affected: GHC, testsuite, array, base, dph, ghc-prim, integer-gmp, integer-simple, primitive, template-haskell. 3) Blow away your build. Be sure to run ./configure to pick up new versions of Alex and Happy Janek