[REPL] Put REPL directives into the REPL history.
[REPL] Put REPL directives into the REPL history.

<rdar://problem/16077929>

Swift SVN r15969

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