[utils] buildbot-script.sh: support alternate CMake Generators, such as Ninja
[utils] buildbot-script.sh: support alternate CMake Generators, such as Ninja

Swift SVN r10404

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