PmExpr: Fix CPP unacceptable too clang's CPP
PmExpr: Fix CPP unacceptable too clang's CPP

tjakway/ghcjvm,vikraman/ghc,shlevy/ghc,mettekou/ghc,mcschroeder/ghc,ezyang/ghc,snoyberg/ghc,ezyang/ghc,gridaphobe/ghc,sdiehl/ghc,vikraman/ghc,vTurbine/ghc,gridaphobe/ghc,vikraman/ghc,vTurbine/ghc,mcschroeder/ghc,nushio3/ghc,gridaphobe/ghc,sgillespie/ghc,GaloisInc/halvm-ghc,vTurbine/ghc,vikraman/ghc,mcschroeder/ghc,vikraman/ghc,gridaphobe/ghc,vTurbine/ghc,mcschroeder/ghc,mettekou/ghc,ezyang/ghc,tjakway/ghcjvm,sdiehl/ghc,sgillespie/ghc,shlevy/ghc,olsner/ghc,sgillespie/ghc,snoyberg/ghc,snoyberg/ghc,olsner/ghc,mcschroeder/ghc,mettekou/ghc,oldmanmike/ghc,oldmanmike/ghc,nushio3/ghc,sgillespie/ghc,oldmanmike/ghc,sdiehl/ghc,shlevy/ghc,sdiehl/ghc,ezyang/ghc,tjakway/ghcjvm,vikraman/ghc,GaloisInc/halvm-ghc,mettekou/ghc,GaloisInc/halvm-ghc,ezyang/ghc,tjakway/ghcjvm,shlevy/ghc,gridaphobe/ghc,oldmanmike/ghc,tjakway/ghcjvm,oldmanmike/ghc,GaloisInc/halvm-ghc,vTurbine/ghc,vikraman/ghc,snoyberg/ghc,shlevy/ghc,gridaphobe/ghc,tjakway/ghcjvm,vTurbine/ghc,snoyberg/ghc,sdiehl/ghc,nushio3/ghc,shlevy/ghc,olsner/ghc,sdiehl/ghc,mettekou/ghc,sgillespie/ghc,vTurbine/ghc,sgillespie/ghc,mcschroeder/ghc,ezyang/ghc,sgillespie/ghc,mcschroeder/ghc,snoyberg/ghc,olsner/ghc,mettekou/ghc,ezyang/ghc,oldmanmike/ghc,olsner/ghc,oldmanmike/ghc,GaloisInc/halvm-ghc,snoyberg/ghc,GaloisInc/halvm-ghc,nushio3/ghc,olsner/ghc,mettekou/ghc,GaloisInc/halvm-ghc,sdiehl/ghc,tjakway/ghcjvm,nushio3/ghc,olsner/ghc,nushio3/ghc,nushio3/ghc,gridaphobe/ghc,shlevy/ghc