llvmGen: Add strictness to metadata fields
llvmGen: Add strictness to metadata fields

mettekou/ghc,olsner/ghc,vTurbine/ghc,ezyang/ghc,snoyberg/ghc,vTurbine/ghc,ezyang/ghc,sdiehl/ghc,sgillespie/ghc,vTurbine/ghc,sdiehl/ghc,sgillespie/ghc,shlevy/ghc,mettekou/ghc,shlevy/ghc,sdiehl/ghc,sdiehl/ghc,snoyberg/ghc,snoyberg/ghc,vTurbine/ghc,mettekou/ghc,olsner/ghc,olsner/ghc,sdiehl/ghc,snoyberg/ghc,olsner/ghc,olsner/ghc,mettekou/ghc,ezyang/ghc,sgillespie/ghc,vTurbine/ghc,snoyberg/ghc,shlevy/ghc,olsner/ghc,mettekou/ghc,shlevy/ghc,ezyang/ghc,sgillespie/ghc,sdiehl/ghc,sgillespie/ghc,vTurbine/ghc,shlevy/ghc,ezyang/ghc,vTurbine/ghc,snoyberg/ghc,shlevy/ghc,mettekou/ghc,sgillespie/ghc,ezyang/ghc,olsner/ghc,mettekou/ghc,shlevy/ghc,sgillespie/ghc,ezyang/ghc,sdiehl/ghc,snoyberg/ghc