[build] Don't reset 'swiftlib_link_flags_all' unnecessarily
[build] Don't reset 'swiftlib_link_flags_all' unnecessarily

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