Reformat build flavours in build.mk.sample (#10223)
Reformat build flavours in build.mk.sample (#10223)

Use same format for each build flavour, to make it easier to compare
them. Refactoring only.

Reviewed By: austin

Differential Revision: https://phabricator.haskell.org/D782

olsner/ghc,ml9951/ghc,oldmanmike/ghc,shlevy/ghc,TomMD/ghc,vikraman/ghc,fmthoma/ghc,snoyberg/ghc,vikraman/ghc,fmthoma/ghc,anton-dessiatov/ghc,TomMD/ghc,sgillespie/ghc,vTurbine/ghc,nkaretnikov/ghc,nushio3/ghc,elieux/ghc,anton-dessiatov/ghc,vTurbine/ghc,oldmanmike/ghc,siddhanathan/ghc,da-x/ghc,sdiehl/ghc,nushio3/ghc,da-x/ghc,nushio3/ghc,mfine/ghc,mettekou/ghc,fmthoma/ghc,fmthoma/ghc,elieux/ghc,ml9951/ghc,acowley/ghc,christiaanb/ghc,sdiehl/ghc,mcschroeder/ghc,mcschroeder/ghc,nkaretnikov/ghc,acowley/ghc,snoyberg/ghc,GaloisInc/halvm-ghc,tjakway/ghcjvm,christiaanb/ghc,sgillespie/ghc,gridaphobe/ghc,elieux/ghc,acowley/ghc,nkaretnikov/ghc,mfine/ghc,mettekou/ghc,AlexanderPankiv/ghc,mettekou/ghc,olsner/ghc,vikraman/ghc,mfine/ghc,acowley/ghc,olsner/ghc,olsner/ghc,anton-dessiatov/ghc,sdiehl/ghc,ml9951/ghc,AlexanderPankiv/ghc,ezyang/ghc,nushio3/ghc,sdiehl/ghc,shlevy/ghc,mettekou/ghc,olsner/ghc,acowley/ghc,snoyberg/ghc,gridaphobe/ghc,oldmanmike/ghc,ezyang/ghc,sgillespie/ghc,tjakway/ghcjvm,snoyberg/ghc,da-x/ghc,shlevy/ghc,tjakway/ghcjvm,mfine/ghc,tjakway/ghcjvm,ml9951/ghc,mfine/ghc,anton-dessiatov/ghc,mettekou/ghc,TomMD/ghc,ml9951/ghc,elieux/ghc,ezyang/ghc,nkaretnikov/ghc,TomMD/ghc,mfine/ghc,urbanslug/ghc,da-x/ghc,da-x/ghc,gridaphobe/ghc,shlevy/ghc,vTurbine/ghc,wxwxwwxxx/ghc,mcschroeder/ghc,siddhanathan/ghc,wxwxwwxxx/ghc,siddhanathan/ghc,siddhanathan/ghc,TomMD/ghc,sgillespie/ghc,AlexanderPankiv/ghc,mcschroeder/ghc,mcschroeder/ghc,ghc-android/ghc,wxwxwwxxx/ghc,ghc-android/ghc,wxwxwwxxx/ghc,fmthoma/ghc,nushio3/ghc,ezyang/ghc,christiaanb/ghc,snoyberg/ghc,nkaretnikov/ghc,anton-dessiatov/ghc,mettekou/ghc,GaloisInc/halvm-ghc,vikraman/ghc,christiaanb/ghc,AlexanderPankiv/ghc,vikraman/ghc,ghc-android/ghc,oldmanmike/ghc,AlexanderPankiv/ghc,nkaretnikov/ghc,GaloisInc/halvm-ghc,vikraman/ghc,TomMD/ghc,wxwxwwxxx/ghc,sgillespie/ghc,gridaphobe/ghc,siddhanathan/ghc,vTurbine/ghc,sgillespie/ghc,gridaphobe/ghc,oldmanmike/ghc,olsner/ghc,anton-dessiatov/ghc,ezyang/ghc,GaloisInc/halvm-ghc,GaloisInc/halvm-ghc,christiaanb/ghc,mettekou/ghc,ghc-android/ghc,ml9951/ghc,sdiehl/ghc,urbanslug/ghc,ghc-android/ghc,siddhanathan/ghc,fmthoma/ghc,nushio3/ghc,oldmanmike/ghc,fmthoma/ghc,christiaanb/ghc,snoyberg/ghc,gridaphobe/ghc,GaloisInc/halvm-ghc,siddhanathan/ghc,ghc-android/ghc,elieux/ghc,anton-dessiatov/ghc,da-x/ghc,elieux/ghc,AlexanderPankiv/ghc,urbanslug/ghc,acowley/ghc,olsner/ghc,tjakway/ghcjvm,vTurbine/ghc,ezyang/ghc,mcschroeder/ghc,oldmanmike/ghc,mcschroeder/ghc,urbanslug/ghc,tjakway/ghcjvm,tjakway/ghcjvm,shlevy/ghc,sdiehl/ghc,sgillespie/ghc,ml9951/ghc,nushio3/ghc,mfine/ghc,GaloisInc/halvm-ghc,ml9951/ghc,shlevy/ghc,da-x/ghc,elieux/ghc,shlevy/ghc,snoyberg/ghc,sdiehl/ghc,wxwxwwxxx/ghc,ghc-android/ghc,wxwxwwxxx/ghc,vikraman/ghc,vTurbine/ghc,nkaretnikov/ghc,urbanslug/ghc,acowley/ghc,urbanslug/ghc,vTurbine/ghc,AlexanderPankiv/ghc,gridaphobe/ghc,TomMD/ghc,christiaanb/ghc,urbanslug/ghc,ezyang/ghc