Check for recursive @property imports in the Clang importer.
Check for recursive @property imports in the Clang importer.

Fixes <rdar://problem/16053872>.


Swift SVN r13852

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