master-next: Change to include CommandFlags.inc (instead of .def)
master-next: Change to include CommandFlags.inc (instead of .def)

LLVM r329840 renamed CommandFlags.def to CommandFlags.inc.
Update Swift to match.

karwa/swift,jopamer/swift,xedin/swift,natecook1000/swift,amraboelela/swift,jmgc/swift,danielmartin/swift,aschwaighofer/swift,nathawes/swift,parkera/swift,amraboelela/swift,shahmishal/swift,gribozavr/swift,gregomni/swift,tkremenek/swift,stephentyrone/swift,hooman/swift,glessard/swift,CodaFi/swift,roambotics/swift,tkremenek/swift,CodaFi/swift,airspeedswift/swift,atrick/swift,jmgc/swift,danielmartin/swift,xedin/swift,karwa/swift,aschwaighofer/swift,nathawes/swift,stephentyrone/swift,airspeedswift/swift,hooman/swift,austinzheng/swift,practicalswift/swift,nathawes/swift,xwu/swift,jckarter/swift,harlanhaskins/swift,jmgc/swift,ahoppen/swift,shahmishal/swift,apple/swift,natecook1000/swift,CodaFi/swift,atrick/swift,allevato/swift,austinzheng/swift,shahmishal/swift,sschiau/swift,xedin/swift,stephentyrone/swift,gribozavr/swift,brentdax/swift,CodaFi/swift,alblue/swift,brentdax/swift,benlangmuir/swift,jopamer/swift,sschiau/swift,apple/swift,roambotics/swift,CodaFi/swift,benlangmuir/swift,ahoppen/swift,aschwaighofer/swift,rudkx/swift,harlanhaskins/swift,gribozavr/swift,airspeedswift/swift,sschiau/swift,shajrawi/swift,glessard/swift,alblue/swift,atrick/swift,xwu/swift,atrick/swift,devincoughlin/swift,brentdax/swift,lorentey/swift,lorentey/swift,parkera/swift,alblue/swift,natecook1000/swift,parkera/swift,sschiau/swift,austinzheng/swift,tkremenek/swift,jckarter/swift,shahmishal/swift,hooman/swift,austinzheng/swift,jckarter/swift,lorentey/swift,xwu/swift,allevato/swift,xwu/swift,jckarter/swift,xedin/swift,nathawes/swift,airspeedswift/swift,roambotics/swift,xedin/swift,danielmartin/swift,xwu/swift,practicalswift/swift,practicalswift/swift,atrick/swift,natecook1000/swift,rudkx/swift,brentdax/swift,JGiola/swift,shahmishal/swift,tkremenek/swift,stephentyrone/swift,apple/swift,karwa/swift,devincoughlin/swift,alblue/swift,glessard/swift,lorentey/swift,rudkx/swift,jopamer/swift,harlanhaskins/swift,parkera/swift,apple/swift,jmgc/swift,amraboelela/swift,aschwaighofer/swift,alblue/swift,devincoughlin/swift,amraboelela/swift,stephentyrone/swift,ahoppen/swift,JGiola/swift,rudkx/swift,danielmartin/swift,devincoughlin/swift,CodaFi/swift,practicalswift/swift,karwa/swift,allevato/swift,brentdax/swift,roambotics/swift,ahoppen/swift,JGiola/swift,xwu/swift,harlanhaskins/swift,harlanhaskins/swift,natecook1000/swift,brentdax/swift,xedin/swift,hooman/swift,gregomni/swift,devincoughlin/swift,jmgc/swift,jopamer/swift,jopamer/swift,lorentey/swift,harlanhaskins/swift,shajrawi/swift,shajrawi/swift,nathawes/swift,danielmartin/swift,shajrawi/swift,karwa/swift,hooman/swift,gribozavr/swift,atrick/swift,aschwaighofer/swift,practicalswift/swift,sschiau/swift,gregomni/swift,harlanhaskins/swift,gregomni/swift,glessard/swift,austinzheng/swift,nathawes/swift,devincoughlin/swift,devincoughlin/swift,airspeedswift/swift,rudkx/swift,airspeedswift/swift,natecook1000/swift,jckarter/swift,jckarter/swift,practicalswift/swift,karwa/swift,tkremenek/swift,karwa/swift,gribozavr/swift,natecook1000/swift,jopamer/swift,austinzheng/swift,jmgc/swift,amraboelela/swift,jmgc/swift,amraboelela/swift,apple/swift,airspeedswift/swift,rudkx/swift,JGiola/swift,karwa/swift,danielmartin/swift,roambotics/swift,brentdax/swift,tkremenek/swift,practicalswift/swift,benlangmuir/swift,shahmishal/swift,glessard/swift,benlangmuir/swift,allevato/swift,xedin/swift,xedin/swift,sschiau/swift,amraboelela/swift,gribozavr/swift,CodaFi/swift,parkera/swift,shajrawi/swift,practicalswift/swift,xwu/swift,apple/swift,jckarter/swift,stephentyrone/swift,allevato/swift,danielmartin/swift,devincoughlin/swift,stephentyrone/swift,aschwaighofer/swift,jopamer/swift,glessard/swift,hooman/swift,shahmishal/swift,tkremenek/swift,gribozavr/swift,parkera/swift,sschiau/swift,lorentey/swift,shajrawi/swift,parkera/swift,allevato/swift,alblue/swift,gregomni/swift,JGiola/swift,lorentey/swift,sschiau/swift,JGiola/swift,hooman/swift,gregomni/swift,ahoppen/swift,roambotics/swift,nathawes/swift,shajrawi/swift,lorentey/swift,austinzheng/swift,shajrawi/swift,parkera/swift,shahmishal/swift,aschwaighofer/swift,allevato/swift,benlangmuir/swift,benlangmuir/swift,alblue/swift,ahoppen/swift,gribozavr/swift