AST: Walk the interface types of SILFunctionType.
AST: Walk the interface types of SILFunctionType.

No apparent FC, but knocks off another dependency on the old types.

Swift SVN r13548

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