Unbox all GCStats fields, also add cpu_seconds and wall_seconds.
Unbox all GCStats fields, also add cpu_seconds and wall_seconds.

Signed-off-by: Edward Z. Yang <dbd597f5635f432486c5d365e9bb585b3eaa1853@mit.edu>

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