[sil] Add a variant of SmallSetVector that uses SmallPtrSet internally instead of SmallDenseSet.
[sil] Add a variant of SmallSetVector that uses SmallPtrSet internally instead of SmallDenseSet.

roambotics/swift,glessard/swift,tkremenek/swift,parkera/swift,parkera/swift,tkremenek/swift,roambotics/swift,hooman/swift,parkera/swift,benlangmuir/swift,xwu/swift,hooman/swift,gregomni/swift,roambotics/swift,apple/swift,xwu/swift,JGiola/swift,xwu/swift,hooman/swift,atrick/swift,hooman/swift,atrick/swift,benlangmuir/swift,apple/swift,gregomni/swift,parkera/swift,atrick/swift,apple/swift,rudkx/swift,parkera/swift,atrick/swift,gregomni/swift,ahoppen/swift,apple/swift,xwu/swift,tkremenek/swift,roambotics/swift,ahoppen/swift,apple/swift,JGiola/swift,parkera/swift,apple/swift,atrick/swift,rudkx/swift,parkera/swift,ahoppen/swift,hooman/swift,roambotics/swift,ahoppen/swift,benlangmuir/swift,tkremenek/swift,JGiola/swift,tkremenek/swift,rudkx/swift,hooman/swift,rudkx/swift,ahoppen/swift,tkremenek/swift,JGiola/swift,tkremenek/swift,xwu/swift,benlangmuir/swift,gregomni/swift,glessard/swift,glessard/swift,glessard/swift,benlangmuir/swift,glessard/swift,JGiola/swift,benlangmuir/swift,JGiola/swift,roambotics/swift,ahoppen/swift,gregomni/swift,rudkx/swift,gregomni/swift,xwu/swift,glessard/swift,atrick/swift,parkera/swift,hooman/swift,rudkx/swift,xwu/swift