[serialization] Don't eagerly load extensions for deserialized nominals.
[serialization] Don't eagerly load extensions for deserialized nominals.

The only reason to do this was in case an extension adopted a compiler-known
protocol, but that has long ben taken care of by
ModuleFile::loadDeclsConformingTo.

Swift SVN r11224

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