Mark ~PathComponent() virtual to silence a bunch of "has virtual functions but non-virtual destructor" warnings in subclasses.
Mark ~PathComponent() virtual to silence a bunch of "has virtual functions but non-virtual destructor" warnings in subclasses.

Swift SVN r1377

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