holePackageKey and isHoleModule utility functions.
holePackageKey and isHoleModule utility functions.

Signed-off-by: Edward Z. Yang <dbd597f5635f432486c5d365e9bb585b3eaa1853@cs.stanford.edu>

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