Silence "text reloc" warnings on OS X / x86
Silence "text reloc" warnings on OS X / x86

ld gives loads of warnings like:
    ld: warning: text reloc in _base_GHCziArr_unsafeArray_info to _base_GHCziArr_unsafeArray_closure
when linking any program. We're not sure whether this is something we
ought to fix, but for now we use the -Wl,-read_only_relocs,suppress flag
to silence them.

gcampax/ghc,lukexi/ghc-7.8-arm64,lukexi/ghc-7.8-arm64,lukexi/ghc,mcschroeder/ghc,bitemyapp/ghc,mettekou/ghc,ghc-android/ghc,tibbe/ghc,nkaretnikov/ghc,siddhanathan/ghc,mcmaniac/ghc,GaloisInc/halvm-ghc,mfine/ghc,nathyong/microghc-ghc,anton-dessiatov/ghc,tjakway/ghcjvm,forked-upstream-packages-for-ghcjs/ghc,fmthoma/ghc,ml9951/ghc,GaloisInc/halvm-ghc,gridaphobe/ghc,gcampax/ghc,mcschroeder/ghc,TomMD/ghc,acowley/ghc,ghc-android/ghc,AlexanderPankiv/ghc,mettekou/ghc,oldmanmike/ghc,gridaphobe/ghc,ryantm/ghc,jstolarek/ghc,christiaanb/ghc,acowley/ghc,oldmanmike/ghc,urbanslug/ghc,nkaretnikov/ghc,christiaanb/ghc,TomMD/ghc,lukexi/ghc-7.8-arm64,sgillespie/ghc,olsner/ghc,oldmanmike/ghc,mcschroeder/ghc,nomeata/ghc,gridaphobe/ghc,nomeata/ghc,tjakway/ghcjvm,olsner/ghc,wxwxwwxxx/ghc,hferreiro/replay,frantisekfarka/ghc-dsi,ekmett/ghc,bitemyapp/ghc,ilyasergey/GHC-XAppFix,shlevy/ghc,mcschroeder/ghc,da-x/ghc,green-haskell/ghc,holzensp/ghc,forked-upstream-packages-for-ghcjs/ghc,mfine/ghc,nomeata/ghc,shlevy/ghc,shlevy/ghc,da-x/ghc,GaloisInc/halvm-ghc,snoyberg/ghc,hferreiro/replay,ezyang/ghc,hferreiro/replay,acowley/ghc,ghc-android/ghc,oldmanmike/ghc,da-x/ghc,forked-upstream-packages-for-ghcjs/ghc,fmthoma/ghc,sgillespie/ghc,christiaanb/ghc,olsner/ghc,frantisekfarka/ghc-dsi,mcmaniac/ghc,bitemyapp/ghc,christiaanb/ghc,anton-dessiatov/ghc,mcschroeder/ghc,hferreiro/replay,acowley/ghc,ml9951/ghc,fmthoma/ghc,gridaphobe/ghc,urbanslug/ghc,oldmanmike/ghc,elieux/ghc,ghc-android/ghc,ml9951/ghc,siddhanathan/ghc,mettekou/ghc,nushio3/ghc,nathyong/microghc-ghc,AlexanderPankiv/ghc,GaloisInc/halvm-ghc,bitemyapp/ghc,mfine/ghc,nathyong/microghc-ghc,vikraman/ghc,snoyberg/ghc,urbanslug/ghc,ilyasergey/GHC-XAppFix,elieux/ghc,christiaanb/ghc,ezyang/ghc,AlexanderPankiv/ghc,olsner/ghc,anton-dessiatov/ghc,spacekitteh/smcghc,nushio3/ghc,hferreiro/replay,ekmett/ghc,da-x/ghc,TomMD/ghc,snoyberg/ghc,sdiehl/ghc,tjakway/ghcjvm,siddhanathan/ghc,mfine/ghc,ezyang/ghc,ml9951/ghc,vTurbine/ghc,fmthoma/ghc,AlexanderPankiv/ghc,christiaanb/ghc,ryantm/ghc,TomMD/ghc,fmthoma/ghc,nomeata/ghc,tjakway/ghcjvm,anton-dessiatov/ghc,da-x/ghc,ryantm/ghc,forked-upstream-packages-for-ghcjs/ghc,tibbe/ghc,vikraman/ghc,nkaretnikov/ghc,tibbe/ghc,AlexanderPankiv/ghc,wxwxwwxxx/ghc,urbanslug/ghc,nkaretnikov/ghc,ezyang/ghc,oldmanmike/ghc,tjakway/ghcjvm,spacekitteh/smcghc,shlevy/ghc,anton-dessiatov/ghc,ilyasergey/GHC-XAppFix,shlevy/ghc,mcmaniac/ghc,green-haskell/ghc,mcmaniac/ghc,snoyberg/ghc,nkaretnikov/ghc,nkaretnikov/ghc,GaloisInc/halvm-ghc,lukexi/ghc-7.8-arm64,ryantm/ghc,fmthoma/ghc,ml9951/ghc,ekmett/ghc,ml9951/ghc,tjakway/ghcjvm,elieux/ghc,vTurbine/ghc,wxwxwwxxx/ghc,ezyang/ghc,gcampax/ghc,lukexi/ghc,nathyong/microghc-ghc,mettekou/ghc,sdiehl/ghc,acowley/ghc,spacekitteh/smcghc,olsner/ghc,shlevy/ghc,spacekitteh/smcghc,ghc-android/ghc,frantisekfarka/ghc-dsi,jstolarek/ghc,sgillespie/ghc,GaloisInc/halvm-ghc,wxwxwwxxx/ghc,holzensp/ghc,lukexi/ghc-7.8-arm64,green-haskell/ghc,gcampax/ghc,jstolarek/ghc,elieux/ghc,urbanslug/ghc,TomMD/ghc,nushio3/ghc,AlexanderPankiv/ghc,ekmett/ghc,jstolarek/ghc,vTurbine/ghc,spacekitteh/smcghc,gridaphobe/ghc,forked-upstream-packages-for-ghcjs/ghc,mfine/ghc,nkaretnikov/ghc,ghc-android/ghc,elieux/ghc,gridaphobe/ghc,ezyang/ghc,lukexi/ghc,mettekou/ghc,wxwxwwxxx/ghc,snoyberg/ghc,mfine/ghc,nathyong/microghc-ghc,mfine/ghc,gridaphobe/ghc,urbanslug/ghc,vTurbine/ghc,olsner/ghc,vTurbine/ghc,jstolarek/ghc,mettekou/ghc,da-x/ghc,sgillespie/ghc,ilyasergey/GHC-XAppFix,forked-upstream-packages-for-ghcjs/ghc,elieux/ghc,ml9951/ghc,mcmaniac/ghc,nushio3/ghc,siddhanathan/ghc,frantisekfarka/ghc-dsi,bitemyapp/ghc,anton-dessiatov/ghc,mcschroeder/ghc,mcschroeder/ghc,nushio3/ghc,frantisekfarka/ghc-dsi,sgillespie/ghc,sdiehl/ghc,snoyberg/ghc,vTurbine/ghc,holzensp/ghc,wxwxwwxxx/ghc,fmthoma/ghc,vikraman/ghc,holzensp/ghc,anton-dessiatov/ghc,gcampax/ghc,sdiehl/ghc,oldmanmike/ghc,vikraman/ghc,ezyang/ghc,ml9951/ghc,holzensp/ghc,sdiehl/ghc,nushio3/ghc,vikraman/ghc,nathyong/microghc-ghc,sdiehl/ghc,sgillespie/ghc,GaloisInc/halvm-ghc,acowley/ghc,lukexi/ghc,vikraman/ghc,tibbe/ghc,tjakway/ghcjvm,siddhanathan/ghc,hferreiro/replay,siddhanathan/ghc,ekmett/ghc,gcampax/ghc,gcampax/ghc,snoyberg/ghc,mettekou/ghc,da-x/ghc,AlexanderPankiv/ghc,urbanslug/ghc,nathyong/microghc-ghc,ryantm/ghc,hferreiro/replay,sdiehl/ghc,sgillespie/ghc,shlevy/ghc,ghc-android/ghc,wxwxwwxxx/ghc,elieux/ghc,TomMD/ghc,acowley/ghc,TomMD/ghc,vikraman/ghc,siddhanathan/ghc,forked-upstream-packages-for-ghcjs/ghc,green-haskell/ghc,lukexi/ghc,nomeata/ghc,olsner/ghc,tibbe/ghc,nushio3/ghc,christiaanb/ghc,green-haskell/ghc,vTurbine/ghc