Look for UIApplicationDelegate properly.
Look for UIApplicationDelegate properly.

We need to perform proper unqualified lookup, so that we deal with SDK
overlays of UIKit properly. Fixes a bug introduced in r21351.

Swift SVN r21353

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