stdlib: tighten constraints on MutableCollectionType.SubSequence
stdlib: tighten constraints on MutableCollectionType.SubSequence

Swift SVN r32674

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