FIX #1385: make sure tuple instances are loaded
FIX #1385: make sure tuple instances are loaded

Typechecking of explicit tuples is done "by hand" (rather than using
boxySplitTyConApp) so that rigidity is maintained.  In making that change
I'd forgotten to retain the call to checkWiredInTyCon, which is important
to make sure instances are brought into scope.

Test is tc227.



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