stdlib: Optimize convertion from array literal for Array
stdlib: Optimize convertion from array literal for Array

Replaced the general implementation (which works for all array types) to the obvious and trivial implementation for Array.
This speeds up array literal initialization by about 2x.



Swift SVN r21626

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