[Makefile] don't try to checkout http:////-URLs.
[Makefile] don't try to checkout http:////-URLs.

I hope that doesn't break stuff on Windows...

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