Revert "Relax reinterpretCast assert to allow a cast to a smaller type."
Revert "Relax reinterpretCast assert to allow a cast to a smaller type."

This reverts commit r16725 per DaveA's request.

Swift SVN r16775

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