Add comment to .cabal file saying what GHC 7.6.1 shipped with
Add comment to .cabal file saying what GHC 7.6.1 shipped with

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