Xcode support: add SWIFT_INCLUDE_PATHS and SWIFT_OTHER_FLAGS.
Xcode support: add SWIFT_INCLUDE_PATHS and SWIFT_OTHER_FLAGS.

SWIFT_INCLUDE_PATHS is mapped to the -I= command-line option.
SWIFT_OTHER_FLAGS is added verbatim to the command line.

Swift SVN r3736

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