Revert "Simplify await()"
Revert "Simplify await()"

This reverts commit ea161384d37b2e80b2a75c532dbb68dbb9492f27.

This should stay until 6.d

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