Add a update-checkout scheme for people to test out stdlib_standalone.
Add a update-checkout scheme for people to test out stdlib_standalone.

shahmishal/swift,allevato/swift,atrick/swift,nathawes/swift,sschiau/swift,lorentey/swift,airspeedswift/swift,devincoughlin/swift,apple/swift,harlanhaskins/swift,gribozavr/swift,allevato/swift,JGiola/swift,benlangmuir/swift,jmgc/swift,devincoughlin/swift,ahoppen/swift,devincoughlin/swift,parkera/swift,stephentyrone/swift,stephentyrone/swift,JGiola/swift,xedin/swift,karwa/swift,JGiola/swift,benlangmuir/swift,shahmishal/swift,glessard/swift,gribozavr/swift,lorentey/swift,allevato/swift,gregomni/swift,xedin/swift,allevato/swift,parkera/swift,roambotics/swift,ahoppen/swift,shahmishal/swift,rudkx/swift,gregomni/swift,xwu/swift,airspeedswift/swift,apple/swift,apple/swift,allevato/swift,harlanhaskins/swift,CodaFi/swift,airspeedswift/swift,parkera/swift,rudkx/swift,benlangmuir/swift,xedin/swift,devincoughlin/swift,CodaFi/swift,jmgc/swift,aschwaighofer/swift,CodaFi/swift,xwu/swift,gregomni/swift,roambotics/swift,glessard/swift,jckarter/swift,gregomni/swift,karwa/swift,xwu/swift,lorentey/swift,xwu/swift,parkera/swift,apple/swift,ahoppen/swift,airspeedswift/swift,ahoppen/swift,aschwaighofer/swift,harlanhaskins/swift,karwa/swift,karwa/swift,sschiau/swift,ahoppen/swift,glessard/swift,atrick/swift,benlangmuir/swift,gribozavr/swift,roambotics/swift,sschiau/swift,stephentyrone/swift,sschiau/swift,xedin/swift,airspeedswift/swift,shahmishal/swift,stephentyrone/swift,xedin/swift,jckarter/swift,sschiau/swift,nathawes/swift,parkera/swift,lorentey/swift,airspeedswift/swift,CodaFi/swift,hooman/swift,ahoppen/swift,xwu/swift,rudkx/swift,harlanhaskins/swift,lorentey/swift,atrick/swift,devincoughlin/swift,gregomni/swift,tkremenek/swift,xedin/swift,nathawes/swift,jckarter/swift,rudkx/swift,xedin/swift,CodaFi/swift,nathawes/swift,CodaFi/swift,rudkx/swift,sschiau/swift,gribozavr/swift,tkremenek/swift,lorentey/swift,tkremenek/swift,karwa/swift,jckarter/swift,xedin/swift,jmgc/swift,aschwaighofer/swift,atrick/swift,glessard/swift,parkera/swift,sschiau/swift,glessard/swift,shahmishal/swift,gregomni/swift,apple/swift,JGiola/swift,atrick/swift,gribozavr/swift,tkremenek/swift,jmgc/swift,karwa/swift,aschwaighofer/swift,parkera/swift,lorentey/swift,hooman/swift,roambotics/swift,harlanhaskins/swift,lorentey/swift,harlanhaskins/swift,karwa/swift,jckarter/swift,hooman/swift,CodaFi/swift,sschiau/swift,shahmishal/swift,JGiola/swift,gribozavr/swift,xwu/swift,jckarter/swift,jckarter/swift,stephentyrone/swift,harlanhaskins/swift,atrick/swift,devincoughlin/swift,aschwaighofer/swift,apple/swift,parkera/swift,hooman/swift,benlangmuir/swift,aschwaighofer/swift,stephentyrone/swift,JGiola/swift,devincoughlin/swift,glessard/swift,tkremenek/swift,nathawes/swift,hooman/swift,benlangmuir/swift,stephentyrone/swift,airspeedswift/swift,allevato/swift,allevato/swift,shahmishal/swift,tkremenek/swift,xwu/swift,shahmishal/swift,devincoughlin/swift,gribozavr/swift,tkremenek/swift,hooman/swift,aschwaighofer/swift,karwa/swift,roambotics/swift,hooman/swift,jmgc/swift,jmgc/swift,nathawes/swift,roambotics/swift,nathawes/swift,gribozavr/swift,rudkx/swift,jmgc/swift