[codesize] Keep _assertionFailed in the swift dylib.
[codesize] Keep _assertionFailed in the swift dylib.

This commit annotates _assertionFailed with an attribute
that will keep in in the swift dylib. We don't care about
the performance of this function because it happens when
the program crashes. Keeping it in the swift dylib helps
in reducing the code size of the user app because it keeps
more of the printing and string.utf8 logic in the dylib.

Swift SVN r31506

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