Revert "LOCAL: Revert "Adapt to llvm change "Remove the PreserveSource linker mode."""
Revert "LOCAL: Revert "Adapt to llvm change "Remove the PreserveSource linker mode."""

This reverts commit r22997. Committed this by mistake sorry!

Swift SVN r22999

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