[buildbot] Include the date in release builds to avoid module cache issues.
[buildbot] Include the date in release builds to avoid module cache issues.

Clang's "repository string" is part of the version info that gets encoded
into modules to make sure they are valid for the current version of the
compiler. Use the current date to make sure this is unique-ish.

Swift SVN r9649

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