[debug-info] Add an == operator to DebugLoc.
[debug-info] Add an == operator to DebugLoc.

I am going to need this for some DI changes needed for rdar://28851920.

rdar://28851920

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