Correct tracking of vars used in `handle` handler
Correct tracking of vars used in `handle` handler

We need to propagate information about this outward. A previous fix for
this issue actually wasn't a real fix, and just pessimized enough in
order to not run into the real problem. This fixes it properly, gaining
back lost performance.

Gnouc/rakudo,salortiz/rakudo,salortiz/rakudo,salortiz/rakudo,softmoth/rakudo,salortiz/rakudo,labster/rakudo,nbrown/rakudo,tony-o/rakudo,tony-o/rakudo,labster/rakudo,tbrowder/rakudo,softmoth/rakudo,Gnouc/rakudo,MasterDuke17/rakudo,labster/rakudo,MasterDuke17/rakudo,rakudo/rakudo,nbrown/rakudo,tbrowder/rakudo,softmoth/rakudo,tony-o/rakudo,labster/rakudo,salortiz/rakudo,Gnouc/rakudo,salortiz/rakudo,rakudo/rakudo,tbrowder/rakudo,rakudo/rakudo,rakudo/rakudo,Gnouc/rakudo,Gnouc/rakudo,labster/rakudo,MasterDuke17/rakudo,tbrowder/rakudo,MasterDuke17/rakudo,Gnouc/rakudo,rakudo/rakudo,tbrowder/rakudo,tony-o/rakudo,nbrown/rakudo,labster/rakudo,MasterDuke17/rakudo,tony-o/rakudo,tbrowder/rakudo,softmoth/rakudo,nbrown/rakudo,rakudo/rakudo,MasterDuke17/rakudo,softmoth/rakudo,nbrown/rakudo,tony-o/rakudo,nbrown/rakudo