Update Cabal submodule to fix Solaris build
Update Cabal submodule to fix Solaris build

see also https://github.com/haskell/cabal/issues/1789

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