[stdlib] Update a comment
[stdlib] Update a comment

We have Builtin.BridgeObject now, so eliminate the "someday..." phrasing

Swift SVN r24806

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