[build-script] copy over the simulator libclang_rt.*.a libraries to allow clang to link with them
[build-script] copy over the simulator libclang_rt.*.a libraries to allow clang to link with them

Clang's driver started linking with libclang_rt.<os>sim.a when building for simulator.

Swift's build need to adapt to this clang change, by ensuring that the libclang_rt.<os>sim.a libraries are created during the build

allevato/swift,benlangmuir/swift,jmgc/swift,tkremenek/swift,allevato/swift,hooman/swift,hooman/swift,benlangmuir/swift,nathawes/swift,CodaFi/swift,apple/swift,CodaFi/swift,xwu/swift,parkera/swift,xwu/swift,gregomni/swift,roambotics/swift,nathawes/swift,glessard/swift,parkera/swift,rudkx/swift,jmgc/swift,hooman/swift,airspeedswift/swift,allevato/swift,tkremenek/swift,JGiola/swift,parkera/swift,xwu/swift,jckarter/swift,jckarter/swift,nathawes/swift,apple/swift,apple/swift,apple/swift,gregomni/swift,JGiola/swift,rudkx/swift,nathawes/swift,JGiola/swift,ahoppen/swift,atrick/swift,atrick/swift,glessard/swift,allevato/swift,parkera/swift,parkera/swift,hooman/swift,atrick/swift,benlangmuir/swift,jmgc/swift,parkera/swift,JGiola/swift,xwu/swift,ahoppen/swift,glessard/swift,jmgc/swift,jmgc/swift,xwu/swift,nathawes/swift,hooman/swift,airspeedswift/swift,jmgc/swift,xwu/swift,roambotics/swift,gregomni/swift,CodaFi/swift,jckarter/swift,apple/swift,benlangmuir/swift,jckarter/swift,roambotics/swift,gregomni/swift,CodaFi/swift,atrick/swift,tkremenek/swift,allevato/swift,rudkx/swift,xwu/swift,jckarter/swift,hooman/swift,roambotics/swift,airspeedswift/swift,CodaFi/swift,ahoppen/swift,tkremenek/swift,jckarter/swift,ahoppen/swift,atrick/swift,airspeedswift/swift,atrick/swift,airspeedswift/swift,ahoppen/swift,glessard/swift,JGiola/swift,rudkx/swift,parkera/swift,benlangmuir/swift,allevato/swift,tkremenek/swift,roambotics/swift,roambotics/swift,glessard/swift,jckarter/swift,benlangmuir/swift,tkremenek/swift,allevato/swift,jmgc/swift,airspeedswift/swift,apple/swift,tkremenek/swift,airspeedswift/swift,parkera/swift,nathawes/swift,CodaFi/swift,gregomni/swift,nathawes/swift,glessard/swift,JGiola/swift,hooman/swift,rudkx/swift,gregomni/swift,rudkx/swift,CodaFi/swift,ahoppen/swift