Simplify a regexp and improve a couple of comments
Simplify a regexp and improve a couple of comments

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