ClangImporter: reorganise the options (#3005)
ClangImporter: reorganise the options (#3005)

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