Change SILSuccessorIterator++() to be a canonical preincrement and add in a postincrement operator.
Change SILSuccessorIterator++() to be a canonical preincrement and add in a postincrement operator.

Swift SVN r10737

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