Adjust behaviour of gcd
Adjust behaviour of gcd

Change behaviour of 'gcd 0 0' from raising an exception to
returning 0 to make it total and conform to mathematical practice.

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