Allow default superclass methods for multi-parameter type classes
Allow default superclass methods for multi-parameter type classes

They were prohibited by mistake, a historical hangover

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