Fix tests for file timestamps to drop the LLVM epoch offset.
Fix tests for file timestamps to drop the LLVM epoch offset.

Now that Swift is not using LLVM's TimeValue (564fc6f2 and previous commit)
there is no offset from the system_clock epoch. The offset could be added
into the tests that use touch.py (so the times would not be back in 1984)
but I decided not to do that to avoid merge conflicts in the test files.

glessard/swift,Jnosh/swift,CodaFi/swift,xedin/swift,swiftix/swift,felix91gr/swift,tinysun212/swift-windows,jckarter/swift,jmgc/swift,natecook1000/swift,calebd/swift,xedin/swift,rudkx/swift,OscarSwanros/swift,JaSpa/swift,apple/swift,austinzheng/swift,JaSpa/swift,milseman/swift,codestergit/swift,sschiau/swift,tjw/swift,gregomni/swift,shajrawi/swift,benlangmuir/swift,arvedviehweger/swift,bitjammer/swift,hughbe/swift,alblue/swift,return/swift,apple/swift,arvedviehweger/swift,benlangmuir/swift,austinzheng/swift,brentdax/swift,shahmishal/swift,OscarSwanros/swift,swiftix/swift,felix91gr/swift,jckarter/swift,felix91gr/swift,uasys/swift,natecook1000/swift,devincoughlin/swift,practicalswift/swift,djwbrown/swift,jopamer/swift,glessard/swift,jtbandes/swift,austinzheng/swift,stephentyrone/swift,benlangmuir/swift,ahoppen/swift,tardieu/swift,hooman/swift,parkera/swift,karwa/swift,hooman/swift,deyton/swift,manavgabhawala/swift,gottesmm/swift,stephentyrone/swift,xwu/swift,lorentey/swift,amraboelela/swift,gottesmm/swift,frootloops/swift,tjw/swift,roambotics/swift,bitjammer/swift,JGiola/swift,tkremenek/swift,xwu/swift,nathawes/swift,zisko/swift,codestergit/swift,aschwaighofer/swift,gregomni/swift,huonw/swift,lorentey/swift,JaSpa/swift,alblue/swift,brentdax/swift,gottesmm/swift,djwbrown/swift,codestergit/swift,atrick/swift,danielmartin/swift,harlanhaskins/swift,lorentey/swift,tinysun212/swift-windows,lorentey/swift,deyton/swift,calebd/swift,manavgabhawala/swift,airspeedswift/swift,shahmishal/swift,huonw/swift,frootloops/swift,gribozavr/swift,uasys/swift,deyton/swift,apple/swift,devincoughlin/swift,shajrawi/swift,airspeedswift/swift,danielmartin/swift,natecook1000/swift,hughbe/swift,glessard/swift,hooman/swift,apple/swift,djwbrown/swift,swiftix/swift,tinysun212/swift-windows,jmgc/swift,atrick/swift,nathawes/swift,ahoppen/swift,stephentyrone/swift,jmgc/swift,benlangmuir/swift,felix91gr/swift,devincoughlin/swift,karwa/swift,JaSpa/swift,shajrawi/swift,parkera/swift,practicalswift/swift,atrick/swift,danielmartin/swift,calebd/swift,xedin/swift,amraboelela/swift,karwa/swift,huonw/swift,practicalswift/swift,return/swift,bitjammer/swift,zisko/swift,jmgc/swift,xedin/swift,OscarSwanros/swift,bitjammer/swift,tinysun212/swift-windows,arvedviehweger/swift,parkera/swift,airspeedswift/swift,practicalswift/swift,calebd/swift,codestergit/swift,CodaFi/swift,nathawes/swift,jmgc/swift,bitjammer/swift,CodaFi/swift,atrick/swift,stephentyrone/swift,alblue/swift,danielmartin/swift,rudkx/swift,harlanhaskins/swift,ahoppen/swift,jckarter/swift,tinysun212/swift-windows,gregomni/swift,karwa/swift,shajrawi/swift,frootloops/swift,devincoughlin/swift,sschiau/swift,tardieu/swift,sschiau/swift,return/swift,tkremenek/swift,gribozavr/swift,tkremenek/swift,roambotics/swift,felix91gr/swift,xedin/swift,gottesmm/swift,atrick/swift,hooman/swift,amraboelela/swift,amraboelela/swift,CodaFi/swift,Jnosh/swift,return/swift,allevato/swift,danielmartin/swift,djwbrown/swift,tkremenek/swift,hughbe/swift,nathawes/swift,hooman/swift,gribozavr/swift,OscarSwanros/swift,jtbandes/swift,ahoppen/swift,deyton/swift,danielmartin/swift,zisko/swift,JaSpa/swift,uasys/swift,uasys/swift,felix91gr/swift,JaSpa/swift,Jnosh/swift,parkera/swift,stephentyrone/swift,apple/swift,airspeedswift/swift,manavgabhawala/swift,milseman/swift,frootloops/swift,Jnosh/swift,JGiola/swift,xwu/swift,glessard/swift,alblue/swift,xedin/swift,tinysun212/swift-windows,roambotics/swift,benlangmuir/swift,jckarter/swift,zisko/swift,manavgabhawala/swift,frootloops/swift,huonw/swift,frootloops/swift,austinzheng/swift,devincoughlin/swift,hooman/swift,shahmishal/swift,nathawes/swift,jtbandes/swift,bitjammer/swift,jtbandes/swift,practicalswift/swift,manavgabhawala/swift,gottesmm/swift,sschiau/swift,xedin/swift,harlanhaskins/swift,OscarSwanros/swift,benlangmuir/swift,bitjammer/swift,tjw/swift,lorentey/swift,calebd/swift,xwu/swift,jckarter/swift,sschiau/swift,uasys/swift,manavgabhawala/swift,tardieu/swift,austinzheng/swift,devincoughlin/swift,Jnosh/swift,tkremenek/swift,lorentey/swift,practicalswift/swift,alblue/swift,OscarSwanros/swift,deyton/swift,jopamer/swift,jckarter/swift,JaSpa/swift,deyton/swift,jmgc/swift,apple/swift,shahmishal/swift,swiftix/swift,codestergit/swift,gregomni/swift,rudkx/swift,practicalswift/swift,arvedviehweger/swift,parkera/swift,return/swift,jopamer/swift,manavgabhawala/swift,sschiau/swift,shajrawi/swift,shahmishal/swift,shahmishal/swift,amraboelela/swift,shajrawi/swift,tkremenek/swift,allevato/swift,return/swift,shahmishal/swift,allevato/swift,aschwaighofer/swift,shajrawi/swift,ahoppen/swift,milseman/swift,alblue/swift,swiftix/swift,JGiola/swift,karwa/swift,frootloops/swift,allevato/swift,devincoughlin/swift,calebd/swift,ahoppen/swift,jtbandes/swift,roambotics/swift,aschwaighofer/swift,felix91gr/swift,JGiola/swift,djwbrown/swift,brentdax/swift,milseman/swift,milseman/swift,gottesmm/swift,sschiau/swift,brentdax/swift,Jnosh/swift,sschiau/swift,codestergit/swift,JGiola/swift,hooman/swift,djwbrown/swift,tardieu/swift,aschwaighofer/swift,jckarter/swift,stephentyrone/swift,tardieu/swift,amraboelela/swift,tkremenek/swift,nathawes/swift,huonw/swift,zisko/swift,parkera/swift,natecook1000/swift,harlanhaskins/swift,OscarSwanros/swift,xwu/swift,huonw/swift,tardieu/swift,brentdax/swift,xwu/swift,shajrawi/swift,rudkx/swift,tardieu/swift,alblue/swift,djwbrown/swift,airspeedswift/swift,lorentey/swift,jopamer/swift,glessard/swift,natecook1000/swift,brentdax/swift,tjw/swift,atrick/swift,natecook1000/swift,CodaFi/swift,aschwaighofer/swift,arvedviehweger/swift,allevato/swift,JGiola/swift,karwa/swift,karwa/swift,gribozavr/swift,milseman/swift,nathawes/swift,return/swift,roambotics/swift,calebd/swift,jmgc/swift,rudkx/swift,tjw/swift,shahmishal/swift,hughbe/swift,airspeedswift/swift,jopamer/swift,codestergit/swift,gribozavr/swift,hughbe/swift,zisko/swift,Jnosh/swift,gottesmm/swift,roambotics/swift,uasys/swift,karwa/swift,swiftix/swift,austinzheng/swift,gribozavr/swift,jtbandes/swift,austinzheng/swift,aschwaighofer/swift,brentdax/swift,aschwaighofer/swift,airspeedswift/swift,huonw/swift,harlanhaskins/swift,harlanhaskins/swift,gregomni/swift,hughbe/swift,devincoughlin/swift,stephentyrone/swift,tjw/swift,xedin/swift,gribozavr/swift,gribozavr/swift,allevato/swift,rudkx/swift,zisko/swift,deyton/swift,jtbandes/swift,xwu/swift,jopamer/swift,amraboelela/swift,gregomni/swift,tinysun212/swift-windows,swiftix/swift,jopamer/swift,arvedviehweger/swift,arvedviehweger/swift,uasys/swift,practicalswift/swift,danielmartin/swift,natecook1000/swift,milseman/swift,parkera/swift,allevato/swift,tjw/swift,parkera/swift,hughbe/swift,harlanhaskins/swift,lorentey/swift,glessard/swift,CodaFi/swift,CodaFi/swift