Add getUnhandledType() in Clang type generation.
Add getUnhandledType() in Clang type generation.

Rather than returning a clang::CanQualType() directly in the cases that
are not currently handled or not currently expected, use this wrapper
function since it's a convenient place to set a breakpoint on.

Swift SVN r13341

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