Relax the restriction on using abstract newtypes in FFI declarations.
Relax the restriction on using abstract newtypes in FFI declarations.

Given the high impact of this change, we decided to back off and make
abstract newtypes give a warning for one release, before we make it an
error in 7.6.1.

Codec/Compression/Zlib/Stream.hsc:884:1:
    Warning: newtype `CInt' is used in an FFI declaration,
             but its constructor is not in scope.
             This will become an error in GHC 7.6.1.
    When checking declaration:
      foreign import ccall unsafe "static zlib.h deflate" c_deflate
        :: StreamState -> CInt -> IO CInt

mfine/ghc,ilyasergey/GHC-XAppFix,forked-upstream-packages-for-ghcjs/ghc,oldmanmike/ghc,spacekitteh/smcghc,sdiehl/ghc,holzensp/ghc,ghc-android/ghc,nathyong/microghc-ghc,elieux/ghc,ghc-android/ghc,sgillespie/ghc,ezyang/ghc,vTurbine/ghc,olsner/ghc,sdiehl/ghc,spacekitteh/smcghc,mettekou/ghc,tibbe/ghc,siddhanathan/ghc,vikraman/ghc,olsner/ghc,mfine/ghc,GaloisInc/halvm-ghc,shlevy/ghc,TomMD/ghc,ryantm/ghc,da-x/ghc,siddhanathan/ghc,elieux/ghc,nkaretnikov/ghc,sgillespie/ghc,hferreiro/replay,ilyasergey/GHC-XAppFix,nkaretnikov/ghc,sgillespie/ghc,mcmaniac/ghc,tibbe/ghc,elieux/ghc,acowley/ghc,urbanslug/ghc,nomeata/ghc,da-x/ghc,ezyang/ghc,urbanslug/ghc,snoyberg/ghc,jstolarek/ghc,AlexanderPankiv/ghc,frantisekfarka/ghc-dsi,spacekitteh/smcghc,gridaphobe/ghc,gridaphobe/ghc,bitemyapp/ghc,da-x/ghc,lukexi/ghc-7.8-arm64,nomeata/ghc,mcschroeder/ghc,TomMD/ghc,gcampax/ghc,siddhanathan/ghc,ezyang/ghc,ezyang/ghc,snoyberg/ghc,gridaphobe/ghc,fmthoma/ghc,tjakway/ghcjvm,lukexi/ghc-7.8-arm64,nushio3/ghc,wxwxwwxxx/ghc,lukexi/ghc,nkaretnikov/ghc,vTurbine/ghc,AlexanderPankiv/ghc,ekmett/ghc,fmthoma/ghc,sdiehl/ghc,TomMD/ghc,acowley/ghc,tjakway/ghcjvm,ml9951/ghc,tibbe/ghc,AlexanderPankiv/ghc,spacekitteh/smcghc,forked-upstream-packages-for-ghcjs/ghc,wxwxwwxxx/ghc,GaloisInc/halvm-ghc,christiaanb/ghc,elieux/ghc,ezyang/ghc,anton-dessiatov/ghc,lukexi/ghc,gridaphobe/ghc,forked-upstream-packages-for-ghcjs/ghc,gcampax/ghc,siddhanathan/ghc,oldmanmike/ghc,anton-dessiatov/ghc,lukexi/ghc,nushio3/ghc,ekmett/ghc,ryantm/ghc,tjakway/ghcjvm,tjakway/ghcjvm,da-x/ghc,vikraman/ghc,forked-upstream-packages-for-ghcjs/ghc,bitemyapp/ghc,ml9951/ghc,mettekou/ghc,TomMD/ghc,frantisekfarka/ghc-dsi,nathyong/microghc-ghc,acowley/ghc,holzensp/ghc,vikraman/ghc,mcmaniac/ghc,ml9951/ghc,tjakway/ghcjvm,mettekou/ghc,snoyberg/ghc,gridaphobe/ghc,snoyberg/ghc,elieux/ghc,frantisekfarka/ghc-dsi,nushio3/ghc,AlexanderPankiv/ghc,gridaphobe/ghc,olsner/ghc,holzensp/ghc,green-haskell/ghc,christiaanb/ghc,AlexanderPankiv/ghc,ghc-android/ghc,nathyong/microghc-ghc,mcschroeder/ghc,ghc-android/ghc,holzensp/ghc,bitemyapp/ghc,shlevy/ghc,GaloisInc/halvm-ghc,wxwxwwxxx/ghc,snoyberg/ghc,GaloisInc/halvm-ghc,urbanslug/ghc,ghc-android/ghc,shlevy/ghc,tjakway/ghcjvm,vTurbine/ghc,vTurbine/ghc,sdiehl/ghc,olsner/ghc,mettekou/ghc,fmthoma/ghc,wxwxwwxxx/ghc,acowley/ghc,mfine/ghc,tibbe/ghc,jstolarek/ghc,GaloisInc/halvm-ghc,mcmaniac/ghc,urbanslug/ghc,fmthoma/ghc,mcmaniac/ghc,olsner/ghc,christiaanb/ghc,siddhanathan/ghc,wxwxwwxxx/ghc,nushio3/ghc,tibbe/ghc,mcschroeder/ghc,mcmaniac/ghc,mcschroeder/ghc,nushio3/ghc,wxwxwwxxx/ghc,oldmanmike/ghc,christiaanb/ghc,acowley/ghc,tjakway/ghcjvm,da-x/ghc,nomeata/ghc,TomMD/ghc,nathyong/microghc-ghc,TomMD/ghc,shlevy/ghc,ilyasergey/GHC-XAppFix,ekmett/ghc,hferreiro/replay,vikraman/ghc,urbanslug/ghc,mfine/ghc,GaloisInc/halvm-ghc,fmthoma/ghc,hferreiro/replay,mettekou/ghc,vTurbine/ghc,jstolarek/ghc,jstolarek/ghc,ml9951/ghc,frantisekfarka/ghc-dsi,fmthoma/ghc,anton-dessiatov/ghc,ilyasergey/GHC-XAppFix,ezyang/ghc,hferreiro/replay,nushio3/ghc,mettekou/ghc,sgillespie/ghc,ryantm/ghc,snoyberg/ghc,ml9951/ghc,nkaretnikov/ghc,sdiehl/ghc,oldmanmike/ghc,anton-dessiatov/ghc,sgillespie/ghc,gridaphobe/ghc,snoyberg/ghc,elieux/ghc,green-haskell/ghc,anton-dessiatov/ghc,nomeata/ghc,olsner/ghc,nushio3/ghc,mcschroeder/ghc,urbanslug/ghc,lukexi/ghc-7.8-arm64,hferreiro/replay,christiaanb/ghc,AlexanderPankiv/ghc,siddhanathan/ghc,nomeata/ghc,forked-upstream-packages-for-ghcjs/ghc,hferreiro/replay,jstolarek/ghc,AlexanderPankiv/ghc,TomMD/ghc,urbanslug/ghc,shlevy/ghc,nkaretnikov/ghc,gcampax/ghc,oldmanmike/ghc,anton-dessiatov/ghc,forked-upstream-packages-for-ghcjs/ghc,lukexi/ghc-7.8-arm64,ezyang/ghc,spacekitteh/smcghc,green-haskell/ghc,ghc-android/ghc,christiaanb/ghc,christiaanb/ghc,ryantm/ghc,green-haskell/ghc,GaloisInc/halvm-ghc,oldmanmike/ghc,sdiehl/ghc,ryantm/ghc,siddhanathan/ghc,nathyong/microghc-ghc,gcampax/ghc,oldmanmike/ghc,bitemyapp/ghc,nathyong/microghc-ghc,vTurbine/ghc,elieux/ghc,da-x/ghc,lukexi/ghc,olsner/ghc,holzensp/ghc,gcampax/ghc,frantisekfarka/ghc-dsi,ekmett/ghc,vTurbine/ghc,acowley/ghc,bitemyapp/ghc,nkaretnikov/ghc,forked-upstream-packages-for-ghcjs/ghc,mcschroeder/ghc,sdiehl/ghc,ml9951/ghc,ml9951/ghc,green-haskell/ghc,gcampax/ghc,vikraman/ghc,shlevy/ghc,mcschroeder/ghc,mettekou/ghc,mfine/ghc,fmthoma/ghc,wxwxwwxxx/ghc,lukexi/ghc,anton-dessiatov/ghc,ekmett/ghc,ghc-android/ghc,hferreiro/replay,acowley/ghc,lukexi/ghc-7.8-arm64,mfine/ghc,mfine/ghc,nkaretnikov/ghc,vikraman/ghc,nathyong/microghc-ghc,da-x/ghc,vikraman/ghc,sgillespie/ghc,gcampax/ghc,shlevy/ghc,ml9951/ghc,sgillespie/ghc