[cmake] Add a SwiftUtils.cmake file to contain little helper routines such as precondition.
[cmake] Add a SwiftUtils.cmake file to contain little helper routines such as precondition.

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