Fix primMname in External Core printer
Fix primMname in External Core printer

My earlier changes broke printing of function types in .hcr files.
In other words: the z-encoding must die.

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