Fix thunk emission for witnesses for protocol members returning an archetype.
Fix thunk emission for witnesses for protocol members returning an archetype.



Swift SVN r2557

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