Fix recompilation checking. One-shot compilation was throwing away the old iface read by checkOldIface, with the result that version numbers were never being incremented.  Fixes the recomp001 test too.
Fix recompilation checking.
One-shot compilation was throwing away the old iface read by
checkOldIface, with the result that version numbers were never being
incremented.  Fixes the recomp001 test too.

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