Clang importer: use StringRef to hash constant strings
Clang importer: use StringRef to hash constant strings

... because we were hashing the pointer value of the constant string.

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