Improve distribution lookup cache
Improve distribution lookup cache

For a single dist CUR like this it doesn't really matter, but following the same template as CURI allows run time generated CURFS lookup to work.
nbrown/rakudo,salortiz/rakudo,labster/rakudo,rakudo/rakudo,nbrown/rakudo,rakudo/rakudo,MasterDuke17/rakudo,MasterDuke17/rakudo,softmoth/rakudo,labster/rakudo,MasterDuke17/rakudo,salortiz/rakudo,MasterDuke17/rakudo,salortiz/rakudo,tbrowder/rakudo,Gnouc/rakudo,nbrown/rakudo,tony-o/rakudo,labster/rakudo,softmoth/rakudo,labster/rakudo,softmoth/rakudo,tbrowder/rakudo,Gnouc/rakudo,rakudo/rakudo,MasterDuke17/rakudo,tbrowder/rakudo,Gnouc/rakudo,tony-o/rakudo,nbrown/rakudo,labster/rakudo,softmoth/rakudo,rakudo/rakudo,tony-o/rakudo,tbrowder/rakudo,nbrown/rakudo,Gnouc/rakudo,salortiz/rakudo,tony-o/rakudo,rakudo/rakudo,tony-o/rakudo,rakudo/rakudo,Gnouc/rakudo,softmoth/rakudo,Gnouc/rakudo,nbrown/rakudo,labster/rakudo,salortiz/rakudo,tbrowder/rakudo,MasterDuke17/rakudo,salortiz/rakudo,tbrowder/rakudo,tony-o/rakudo