Make Mu.Bool about 10x faster
Make Mu.Bool about 10x faster

- remove | from proto sig
- replace Mu: candidate with 2 candidates, :D for True, :U for False

softmoth/rakudo,sjn/rakudo,b2gills/rakudo,MasterDuke17/rakudo,labster/rakudo,zostay/rakudo,MasterDuke17/rakudo,ab5tract/rakudo,b2gills/rakudo,nbrown/rakudo,Gnouc/rakudo,salortiz/rakudo,nbrown/rakudo,labster/rakudo,Gnouc/rakudo,ab5tract/rakudo,usev6/rakudo,raydiak/rakudo,raydiak/rakudo,sjn/rakudo,salortiz/rakudo,lucasbuchala/rakudo,raydiak/rakudo,salortiz/rakudo,awwaiid/rakudo,MasterDuke17/rakudo,zostay/rakudo,usev6/rakudo,labster/rakudo,tbrowder/rakudo,Gnouc/rakudo,awwaiid/rakudo,salortiz/rakudo,samcv/rakudo,azawawi/rakudo,sjn/rakudo,jonathanstowe/rakudo,tbrowder/rakudo,awwaiid/rakudo,labster/rakudo,usev6/rakudo,usev6/rakudo,softmoth/rakudo,lucasbuchala/rakudo,samcv/rakudo,tbrowder/rakudo,rakudo/rakudo,nbrown/rakudo,awwaiid/rakudo,rakudo/rakudo,jonathanstowe/rakudo,tony-o/rakudo,zostay/rakudo,b2gills/rakudo,ab5tract/rakudo,awwaiid/rakudo,Gnouc/rakudo,salortiz/rakudo,nbrown/rakudo,Gnouc/rakudo,lucasbuchala/rakudo,tony-o/rakudo,MasterDuke17/rakudo,b2gills/rakudo,tony-o/rakudo,azawawi/rakudo,softmoth/rakudo,tony-o/rakudo,lucasbuchala/rakudo,lucasbuchala/rakudo,ab5tract/rakudo,samcv/rakudo,tbrowder/rakudo,tbrowder/rakudo,b2gills/rakudo,zostay/rakudo,tbrowder/rakudo,nbrown/rakudo,azawawi/rakudo,salortiz/rakudo,samcv/rakudo,softmoth/rakudo,ab5tract/rakudo,raydiak/rakudo,rakudo/rakudo,rakudo/rakudo,jonathanstowe/rakudo,samcv/rakudo,tony-o/rakudo,MasterDuke17/rakudo,nbrown/rakudo,MasterDuke17/rakudo,labster/rakudo,rakudo/rakudo,softmoth/rakudo,azawawi/rakudo,jonathanstowe/rakudo,rakudo/rakudo,jonathanstowe/rakudo,labster/rakudo,tony-o/rakudo,sjn/rakudo,azawawi/rakudo,Gnouc/rakudo,sjn/rakudo,usev6/rakudo