Added utility create-filecheck-tests that takes in a sil fragment and converts SSA variables to FileCheck variables.
Added utility create-filecheck-tests that takes in a sil fragment and converts SSA variables to FileCheck variables.

Swift SVN r11912

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