stdlib: update overlay code for Foundation nullability audit
stdlib: update overlay code for Foundation nullability audit

Swift SVN r27731

frootloops/swift,amraboelela/swift,allevato/swift,frootloops/swift,kstaring/swift,amraboelela/swift,shajrawi/swift,shahmishal/swift,hughbe/swift,KrishMunot/swift,kperryua/swift,SwiftAndroid/swift,MukeshKumarS/Swift,arvedviehweger/swift,tardieu/swift,airspeedswift/swift,kusl/swift,shajrawi/swift,bitjammer/swift,zisko/swift,shajrawi/swift,felix91gr/swift,adrfer/swift,xwu/swift,natecook1000/swift,IngmarStein/swift,glessard/swift,airspeedswift/swift,OscarSwanros/swift,johnno1962d/swift,parkera/swift,hooman/swift,parkera/swift,kusl/swift,natecook1000/swift,tinysun212/swift-windows,modocache/swift,Ivacker/swift,kentya6/swift,roambotics/swift,tardieu/swift,brentdax/swift,gribozavr/swift,apple/swift,airspeedswift/swift,OscarSwanros/swift,mightydeveloper/swift,dreamsxin/swift,swiftix/swift,adrfer/swift,codestergit/swift,alblue/swift,MukeshKumarS/Swift,gottesmm/swift,kstaring/swift,devincoughlin/swift,gottesmm/swift,swiftix/swift.old,Jnosh/swift,lorentey/swift,austinzheng/swift,slavapestov/swift,kperryua/swift,JaSpa/swift,lorentey/swift,shahmishal/swift,adrfer/swift,devincoughlin/swift,sdulal/swift,Jnosh/swift,IngmarStein/swift,jopamer/swift,manavgabhawala/swift,parkera/swift,rudkx/swift,emilstahl/swift,jtbandes/swift,tjw/swift,benlangmuir/swift,kentya6/swift,khizkhiz/swift,manavgabhawala/swift,natecook1000/swift,atrick/swift,karwa/swift,slavapestov/swift,gmilos/swift,jtbandes/swift,manavgabhawala/swift,shajrawi/swift,therealbnut/swift,ken0nek/swift,shajrawi/swift,glessard/swift,nathawes/swift,KrishMunot/swift,LeoShimonaka/swift,jtbandes/swift,apple/swift,ken0nek/swift,jopamer/swift,tkremenek/swift,karwa/swift,practicalswift/swift,aschwaighofer/swift,stephentyrone/swift,codestergit/swift,tardieu/swift,swiftix/swift.old,roambotics/swift,tkremenek/swift,jckarter/swift,nathawes/swift,lorentey/swift,allevato/swift,hughbe/swift,amraboelela/swift,ahoppen/swift,tjw/swift,zisko/swift,jmgc/swift,karwa/swift,tjw/swift,calebd/swift,harlanhaskins/swift,arvedviehweger/swift,tkremenek/swift,alblue/swift,JGiola/swift,benlangmuir/swift,devincoughlin/swift,danielmartin/swift,gregomni/swift,therealbnut/swift,atrick/swift,jopamer/swift,LeoShimonaka/swift,jckarter/swift,austinzheng/swift,return/swift,tkremenek/swift,codestergit/swift,gmilos/swift,JaSpa/swift,ben-ng/swift,SwiftAndroid/swift,JaSpa/swift,amraboelela/swift,apple/swift,felix91gr/swift,arvedviehweger/swift,austinzheng/swift,stephentyrone/swift,alblue/swift,gribozavr/swift,sschiau/swift,practicalswift/swift,tkremenek/swift,kstaring/swift,huonw/swift,CodaFi/swift,modocache/swift,SwiftAndroid/swift,kentya6/swift,lorentey/swift,apple/swift,ben-ng/swift,khizkhiz/swift,huonw/swift,benlangmuir/swift,felix91gr/swift,danielmartin/swift,gregomni/swift,arvedviehweger/swift,xedin/swift,swiftix/swift.old,kperryua/swift,gribozavr/swift,therealbnut/swift,lorentey/swift,gmilos/swift,emilstahl/swift,sdulal/swift,stephentyrone/swift,xedin/swift,brentdax/swift,arvedviehweger/swift,cbrentharris/swift,lorentey/swift,shahmishal/swift,mightydeveloper/swift,deyton/swift,gregomni/swift,hooman/swift,dduan/swift,return/swift,therealbnut/swift,hooman/swift,xwu/swift,modocache/swift,shahmishal/swift,jopamer/swift,aschwaighofer/swift,kusl/swift,emilstahl/swift,ken0nek/swift,LeoShimonaka/swift,frootloops/swift,uasys/swift,KrishMunot/swift,swiftix/swift,xedin/swift,frootloops/swift,kusl/swift,atrick/swift,tjw/swift,emilstahl/swift,adrfer/swift,practicalswift/swift,aschwaighofer/swift,swiftix/swift,sdulal/swift,kentya6/swift,CodaFi/swift,benlangmuir/swift,kperryua/swift,practicalswift/swift,Ivacker/swift,gottesmm/swift,tjw/swift,djwbrown/swift,hughbe/swift,slavapestov/swift,ben-ng/swift,IngmarStein/swift,IngmarStein/swift,deyton/swift,kentya6/swift,gmilos/swift,swiftix/swift.old,slavapestov/swift,austinzheng/swift,hooman/swift,LeoShimonaka/swift,jckarter/swift,djwbrown/swift,allevato/swift,adrfer/swift,manavgabhawala/swift,codestergit/swift,uasys/swift,aschwaighofer/swift,alblue/swift,jtbandes/swift,kstaring/swift,MukeshKumarS/Swift,rudkx/swift,deyton/swift,manavgabhawala/swift,CodaFi/swift,emilstahl/swift,hooman/swift,huonw/swift,alblue/swift,deyton/swift,calebd/swift,zisko/swift,bitjammer/swift,gregomni/swift,mightydeveloper/swift,tkremenek/swift,return/swift,atrick/swift,devincoughlin/swift,hooman/swift,calebd/swift,modocache/swift,uasys/swift,IngmarStein/swift,MukeshKumarS/Swift,SwiftAndroid/swift,Ivacker/swift,cbrentharris/swift,arvedviehweger/swift,cbrentharris/swift,johnno1962d/swift,jmgc/swift,JaSpa/swift,russbishop/swift,kperryua/swift,gottesmm/swift,jmgc/swift,kperryua/swift,LeoShimonaka/swift,milseman/swift,natecook1000/swift,Jnosh/swift,sdulal/swift,kentya6/swift,swiftix/swift,johnno1962d/swift,JGiola/swift,apple/swift,russbishop/swift,gribozavr/swift,calebd/swift,frootloops/swift,xedin/swift,SwiftAndroid/swift,sschiau/swift,brentdax/swift,swiftix/swift,ben-ng/swift,codestergit/swift,dduan/swift,khizkhiz/swift,LeoShimonaka/swift,austinzheng/swift,sschiau/swift,bitjammer/swift,manavgabhawala/swift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