Test return value of clock_gettime() for errors.
Test return value of clock_gettime() for errors.

I don't want to fall back to gettimeofday(), because that might have a
different absolute value.

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