Make empty string numify to zero
Make empty string numify to zero

As explained by TimToady++, not as weird and unusual as I thought to
have this behavior.

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