Fix the check if a frame is from Rakudo core src
Fix the check if a frame is from Rakudo core src

Use the mark added to tools/build/gen-cat.nqp
tony-o/rakudo,nbrown/rakudo,Gnouc/rakudo,rakudo/rakudo,MasterDuke17/rakudo,sjn/rakudo,salortiz/rakudo,rakudo/rakudo,sjn/rakudo,raydiak/rakudo,raydiak/rakudo,labster/rakudo,jonathanstowe/rakudo,salortiz/rakudo,samcv/rakudo,lucasbuchala/rakudo,awwaiid/rakudo,usev6/rakudo,tbrowder/rakudo,Gnouc/rakudo,tony-o/rakudo,softmoth/rakudo,nbrown/rakudo,samcv/rakudo,jonathanstowe/rakudo,rakudo/rakudo,tbrowder/rakudo,MasterDuke17/rakudo,salortiz/rakudo,softmoth/rakudo,labster/rakudo,jonathanstowe/rakudo,rakudo/rakudo,softmoth/rakudo,tony-o/rakudo,sjn/rakudo,raydiak/rakudo,awwaiid/rakudo,rakudo/rakudo,samcv/rakudo,samcv/rakudo,MasterDuke17/rakudo,salortiz/rakudo,nbrown/rakudo,labster/rakudo,nbrown/rakudo,usev6/rakudo,sjn/rakudo,MasterDuke17/rakudo,raydiak/rakudo,awwaiid/rakudo,Gnouc/rakudo,lucasbuchala/rakudo,rakudo/rakudo,salortiz/rakudo,awwaiid/rakudo,tbrowder/rakudo,softmoth/rakudo,lucasbuchala/rakudo,tbrowder/rakudo,samcv/rakudo,labster/rakudo,usev6/rakudo,MasterDuke17/rakudo,softmoth/rakudo,tony-o/rakudo,lucasbuchala/rakudo,labster/rakudo,awwaiid/rakudo,usev6/rakudo,jonathanstowe/rakudo,Gnouc/rakudo,tbrowder/rakudo,Gnouc/rakudo,Gnouc/rakudo,tbrowder/rakudo,tony-o/rakudo,salortiz/rakudo,usev6/rakudo,labster/rakudo,MasterDuke17/rakudo,lucasbuchala/rakudo,sjn/rakudo,nbrown/rakudo,tony-o/rakudo,jonathanstowe/rakudo,nbrown/rakudo