15242776 stdlib: merge "Array" and "Slice" into Array.swift
15242776 stdlib: merge "Array" and "Slice" into Array.swift

The "HArray" name is temporary.

Swift SVN r10708

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