Make Supply.lines a few percent faster
Make Supply.lines a few percent faster

- make it a multi, to allow for more future functionality
- one candidate for always chomping, one candidate with an option
- reduce number of variables used, reorganize some conditions
- let nqp::substr do more work

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