Swap out List for GLR implementation.
Swap out List for GLR implementation.

Lots of things are commented out and in need of review post-GLR, but
hopefully most of them can also wait until after we get CORE.setting
to compile again (and so others can jump in and help with them).

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