Change generic abs function to use +$x instead of $x.Num.
Change generic abs function to use +$x instead of $x.Num.

+$x correctly handles strings, whereas $x.Num only works for types with .Num defined -- probably Int, Rat, and Num right now.

jonathanstowe/rakudo,MasterDuke17/rakudo,labster/rakudo,b2gills/rakudo,MasterDuke17/rakudo,labster/rakudo,tony-o/rakudo,samcv/rakudo,niner/rakudo,ugexe/rakudo,awwaiid/rakudo,tony-o/deb-rakudodaily,tbrowder/rakudo,salortiz/rakudo,sergot/rakudo,jonathanstowe/rakudo,niner/rakudo,Gnouc/rakudo,Gnouc/rakudo,laben/rakudo,LLFourn/rakudo,tbrowder/rakudo,samcv/rakudo,salortiz/rakudo,tbrowder/rakudo,labster/rakudo,ugexe/rakudo,teodozjan/rakudo,dankogai/rakudo,zostay/rakudo,labster/rakudo,LLFourn/rakudo,b2gills/rakudo,skids/rakudo,softmoth/rakudo,Leont/rakudo,pmurias/rakudo,nbrown/rakudo,lucasbuchala/rakudo,skids/rakudo,tony-o/rakudo,rjbs/rakudo,usev6/rakudo,Gnouc/rakudo,labster/rakudo,azawawi/rakudo,awwaiid/rakudo,lucasbuchala/rakudo,rakudo/rakudo,ungrim97/rakudo,zhuomingliang/rakudo,awwaiid/rakudo,Leont/rakudo,rjbs/rakudo,azawawi/rakudo,MasterDuke17/rakudo,tony-o/rakudo,raydiak/rakudo,paultcochrane/rakudo,lucasbuchala/rakudo,Leont/rakudo,Gnouc/rakudo,retupmoca/rakudo,cygx/rakudo,laben/rakudo,salortiz/rakudo,zostay/rakudo,tbrowder/rakudo,tony-o/deb-rakudodaily,zostay/rakudo,dwarring/rakudo,sjn/rakudo,sjn/rakudo,MasterDuke17/rakudo,jonathanstowe/rakudo,zhuomingliang/rakudo,MasterDuke17/rakudo,paultcochrane/rakudo,azawawi/rakudo,ungrim97/rakudo,awwaiid/rakudo,usev6/rakudo,cygx/rakudo,Gnouc/rakudo,zostay/rakudo,ugexe/rakudo,b2gills/rakudo,raydiak/rakudo,jonathanstowe/rakudo,usev6/rakudo,retupmoca/rakudo,lucasbuchala/rakudo,cognominal/rakudo,lucasbuchala/rakudo,cognominal/rakudo,sergot/rakudo,ab5tract/rakudo,niner/rakudo,raydiak/rakudo,pmurias/rakudo,paultcochrane/rakudo,sjn/rakudo,rakudo/rakudo,usev6/rakudo,tbrowder/rakudo,dwarring/rakudo,skids/rakudo,salortiz/rakudo,salortiz/rakudo,skids/rakudo,b2gills/rakudo,labster/rakudo,LLFourn/rakudo,tony-o/rakudo,ungrim97/rakudo,nbrown/rakudo,tony-o/deb-rakudodaily,zhuomingliang/rakudo,ab5tract/rakudo,rakudo/rakudo,laben/rakudo,ab5tract/rakudo,salortiz/rakudo,tony-o/deb-rakudodaily,sjn/rakudo,teodozjan/rakudo,retupmoca/rakudo,dankogai/rakudo,rakudo/rakudo,tbrowder/rakudo,raydiak/rakudo,dankogai/rakudo,ugexe/rakudo,niner/rakudo,b2gills/rakudo,laben/rakudo,cygx/rakudo,pmurias/rakudo,Gnouc/rakudo,dwarring/rakudo,nbrown/rakudo,ab5tract/rakudo,LLFourn/rakudo,cognominal/rakudo,samcv/rakudo,Leont/rakudo,azawawi/rakudo,softmoth/rakudo,awwaiid/rakudo,ungrim97/rakudo,nunorc/rakudo,skids/rakudo,cognominal/rakudo,rakudo/rakudo,LLFourn/rakudo,dankogai/rakudo,rjbs/rakudo,rakudo/rakudo,sergot/rakudo,teodozjan/rakudo,zhuomingliang/rakudo,pmurias/rakudo,softmoth/rakudo,dankogai/rakudo,ungrim97/rakudo,nunorc/rakudo,nunorc/rakudo,cygx/rakudo,ab5tract/rakudo,sergot/rakudo,tony-o/rakudo,retupmoca/rakudo,samcv/rakudo,softmoth/rakudo,tony-o/rakudo,nunorc/rakudo,nbrown/rakudo,sjn/rakudo,tony-o/deb-rakudodaily,tony-o/deb-rakudodaily,teodozjan/rakudo,paultcochrane/rakudo,cygx/rakudo,nbrown/rakudo,dwarring/rakudo,softmoth/rakudo,MasterDuke17/rakudo,azawawi/rakudo,nbrown/rakudo,cognominal/rakudo,paultcochrane/rakudo,jonathanstowe/rakudo,ugexe/rakudo,tony-o/deb-rakudodaily,samcv/rakudo,usev6/rakudo