document the memory model of IORef
document the memory model of IORef

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