Fix Windows build failure
Fix Windows build failure

We were calling freeArgv with arguments of the wrong type.
But actually, we had our own copy of its loop anyway, so
now we just use that instead.

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