[stdlib] Conditionally compile swift_strto* wrappers
[stdlib] Conditionally compile swift_strto* wrappers

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