[stdlib] Make _CollectionWrapperType usable
[stdlib] Make _CollectionWrapperType usable

It was neither testable (because it was internal) nor usable (because in
practice models would be full of ambiguities with methods provided in
extensions for CollectionType.

Swift SVN r29859

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