Fix mentions of now-removed GatherIter.
Fix mentions of now-removed GatherIter.

awwaiid/rakudo,tbrowder/rakudo,sjn/rakudo,rakudo/rakudo,nunorc/rakudo,cognominal/rakudo,labster/rakudo,softmoth/rakudo,labster/rakudo,tony-o/rakudo,lucasbuchala/rakudo,rakudo/rakudo,labster/rakudo,b2gills/rakudo,ab5tract/rakudo,lucasbuchala/rakudo,raydiak/rakudo,Gnouc/rakudo,ungrim97/rakudo,LLFourn/rakudo,Gnouc/rakudo,samcv/rakudo,ugexe/rakudo,Gnouc/rakudo,nbrown/rakudo,awwaiid/rakudo,ab5tract/rakudo,nbrown/rakudo,MasterDuke17/rakudo,nbrown/rakudo,azawawi/rakudo,b2gills/rakudo,ugexe/rakudo,rakudo/rakudo,sjn/rakudo,paultcochrane/rakudo,zostay/rakudo,lucasbuchala/rakudo,jonathanstowe/rakudo,salortiz/rakudo,LLFourn/rakudo,tony-o/rakudo,salortiz/rakudo,samcv/rakudo,tony-o/rakudo,MasterDuke17/rakudo,samcv/rakudo,raydiak/rakudo,salortiz/rakudo,softmoth/rakudo,awwaiid/rakudo,usev6/rakudo,ugexe/rakudo,sjn/rakudo,LLFourn/rakudo,labster/rakudo,azawawi/rakudo,zostay/rakudo,ab5tract/rakudo,lucasbuchala/rakudo,sjn/rakudo,skids/rakudo,MasterDuke17/rakudo,zostay/rakudo,tony-o/rakudo,jonathanstowe/rakudo,MasterDuke17/rakudo,labster/rakudo,cognominal/rakudo,cognominal/rakudo,b2gills/rakudo,ungrim97/rakudo,salortiz/rakudo,jonathanstowe/rakudo,azawawi/rakudo,salortiz/rakudo,tbrowder/rakudo,cygx/rakudo,dankogai/rakudo,paultcochrane/rakudo,skids/rakudo,softmoth/rakudo,dankogai/rakudo,tony-o/rakudo,usev6/rakudo,dankogai/rakudo,tbrowder/rakudo,cygx/rakudo,nbrown/rakudo,softmoth/rakudo,paultcochrane/rakudo,labster/rakudo,b2gills/rakudo,raydiak/rakudo,raydiak/rakudo,MasterDuke17/rakudo,LLFourn/rakudo,dankogai/rakudo,salortiz/rakudo,tbrowder/rakudo,skids/rakudo,awwaiid/rakudo,ugexe/rakudo,sjn/rakudo,LLFourn/rakudo,rakudo/rakudo,awwaiid/rakudo,skids/rakudo,Gnouc/rakudo,paultcochrane/rakudo,ungrim97/rakudo,softmoth/rakudo,cygx/rakudo,tbrowder/rakudo,Gnouc/rakudo,nunorc/rakudo,zostay/rakudo,ugexe/rakudo,dankogai/rakudo,samcv/rakudo,nbrown/rakudo,cygx/rakudo,nbrown/rakudo,cognominal/rakudo,lucasbuchala/rakudo,azawawi/rakudo,Gnouc/rakudo,usev6/rakudo,azawawi/rakudo,nunorc/rakudo,MasterDuke17/rakudo,usev6/rakudo,rakudo/rakudo,usev6/rakudo,samcv/rakudo,ungrim97/rakudo,ungrim97/rakudo,jonathanstowe/rakudo,skids/rakudo,nunorc/rakudo,rakudo/rakudo,paultcochrane/rakudo,cognominal/rakudo,ab5tract/rakudo,tony-o/rakudo,cygx/rakudo,jonathanstowe/rakudo,b2gills/rakudo,ab5tract/rakudo,tbrowder/rakudo