[Constraint application] Handle subclass-to-superclass coercions directly.
[Constraint application] Handle subclass-to-superclass coercions directly.


Swift SVN r5073

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