[stdlib] internal Box<T> should be final
[stdlib] internal Box<T> should be final

Swift SVN r29533

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nno1962d/swift,adrfer/swift,nathawes/swift,huonw/swift,swiftix/swift,shajrawi/swift,hooman/swift,sdulal/swift,johnno1962d/swift,kusl/swift,gregomni/swift,harlanhaskins/swift,swiftix/swift.old,parkera/swift,roambotics/swift,khizkhiz/swift,calebd/swift,hooman/swift,dduan/swift,CodaFi/swift,harlanhaskins/swift,devincoughlin/swift,lorentey/swift,IngmarStein/swift,modocache/swift,rudkx/swift,tardieu/swift,JGiola/swift,dduan/swift,apple/swift,deyton/swift,russbishop/swift,jtbandes/swift,lorentey/swift,aschwaighofer/swift,sschiau/swift,alblue/swift,sschiau/swift,natecook1000/swift,xwu/swift,zisko/swift,tjw/swift,sschiau/swift,zisko/swift,KrishMunot/swift,alblue/swift,Jnosh/swift,OscarSwanros/swift,sdulal/swift,deyton/swift,parkera/swift,cbrentharris/swift,jmgc/swift,return/swift,practicalswift/swift,gottesmm/swift,zisko/swift,sschiau/swift,dduan/swift,sdulal/swift,uasys/swift,aschwaighofer/swift,danielmartin/swift,aschwaighofer/swift,parkera/swift,kstaring/swift,ken0nek/swift,stephentyrone/swift,adrfer/swift,LeoShimonaka/swift,gregomni/swift,OscarSwanros/swift,kstaring/swift,parkera/swift,gribozavr/swift,karwa/swift,harlanhaskins/swift,SwiftAndroid/swift,MukeshKumarS/Swift,apple/swift,mightydeveloper/swift,manavgabhawala/swift,therealbnut/swift,swiftix/swift.old,manavgabhawala/swift,calebd/swift,emilstahl/swift,arvedviehweger/swift,return/swift,amraboelela/swift,modocache/swift,JGiola/swift,tjw/swift,tkremenek/swift,mightydeveloper/swift,arvedviehweger/swift,khizkhiz/swift,kperryua/swift,karwa/swift,danielmartin/swift,kperryua/swift,IngmarStein/swift,jmgc/swift,kperryua/swift,roambotics/swift,tinysun212/swift-windows,deyton/swift,kentya6/swift,nathawes/swift,ben-ng/swift,russbishop/swift,Ivacker/swift,stephentyrone/swift,ken0nek/swift,swiftix/swift.old,adrfer/swift,tkremenek/swift,arvedviehweger/swift,lorentey/swift,amraboelela/swift,tardieu/swift,brentdax/swift,deyton/swift,khizkhiz/swift,jmgc/swift,xwu/swift,amraboelela/swift,felix91gr/swift,gribozavr/swift,rudkx/swift,calebd/swift,KrishMunot/swift,nathawes/swift,kentya6/swift,jopamer/swift,alblue/swift,jtbandes/swift,shahmishal/swift,jtbandes/swift,slavapestov/swift,russbishop/swift,tardieu/swift,parkera/swift,swiftix/swift,amraboelela/swift,CodaFi/swift,SwiftAndroid/swift,airspeedswift/swift,frootloops/swift,calebd/swift,IngmarStein/swift,lorentey/swift,therealbnut/swift,mightydeveloper/swift,xedin/swift,kusl/swift,apple/swift,bitjammer/swift,Jnosh/swift,emilstahl/swift,gregomni/swift,gmilos/swift,OscarSwanros/swift,kentya6/swift,deyton/swift,uasys/swift,sschiau/swift,KrishMunot/swift,djwbrown/swift,kusl/swift,Ivacker/swift,LeoShimonaka/swift,allevato/swift,OscarSwanros/swift,austinzheng/swift,therealbnut/swift,djwbrown/swift,CodaFi/swift,Ivacker/swift,jtbandes/swift,gottesmm/swift,kstaring/swift,rudkx/swift,deyton/swift,danielmartin/swift,allevato/swift,tinysun212/swift-windows,gottesmm/swift,kentya6/swift,airspeedswift/swift,natecook1000/swift,ben-ng/swift,nathawes/swift,aschwaighofer/swift,calebd/swift,parkera/swift,mightydeveloper/swift,tkremenek/swift,rudkx/swift,MukeshKumarS/Swift,arvedviehweger/swift,xedin/swift,ben-ng/swift,JaSpa/swift,xedin/swift,mightydeveloper/swift,johnno1962d/swift,benlangmuir/swift,practicalswift/swift,zisko/swift,jtbandes/swift,jckarter/swift,allevato/swift,atrick/swift,alblue/swift,glessard/swift,Ivacker/swift,swiftix/swift,ahoppen/swift,manavgabhawala/swift,shajrawi/swift,LeoShimonaka/swift,gmilos/swift,sdulal/swift,calebd/swift,slavapestov/swift,LeoShimonaka/swift,tjw/swift,natecook1000/swift,airspeedswift/swift,IngmarStein/swift,kperryua/swift,modocache/swift,atrick/swift,huonw/swift,karwa/swift,johnno1962d/swift,shajrawi/swift,arvedviehweger/swift,Ivacker/swift,devincoughlin/swift,mightydeveloper/swift,adrfer/swift,codestergit/swift,ahoppen/swift,slavapestov/swift,codestergit/swift,tardieu/swift,gottesmm/swift,parkera/swift,hooman/swift,cbrentharris/swift,devincoughlin/swift,glessard/swift,xedin/swift,ben-ng/swift,brentdax/swift,sschiau/swift,therealbnut/swift,codestergit/swift,zisko/swift,apple/swift,frootloops/swift,jmgc/swift,lorentey/swift,kentya6/swift,xwu/swift,shajrawi/swift,emilstahl/swift,jopamer/swift,jopamer/swift,codestergit/swift,jmgc/swift,atrick/swift,LeoShimonaka/swift,bitjammer/swift,khizkhiz/swift,kstaring/swift,sdulal/swift,huonw/swift,kusl/swift,return/swift,tardieu/swift,LeoShimonaka/swift,arvedviehweger/swift,bitjammer/swift,Jnosh/swift,austinzheng/swift,hughbe/swift,tinysun212/swift-windows,danielmartin/swift,shahmishal/swift,MukeshKumarS/Swift,stephentyrone/swift,slavapestov/swift,harlanhaskins/swift,milseman/swift,SwiftAndroid/swift,natecook1000/swift,sschiau/swift,modocache/swift,glessard/swift,jckarter/swift,jckarter/swift,tkremenek/swift,kstaring/swift,kusl/swift,benlangmuir/swift