Minor cleanup in Clang type generation.
Minor cleanup in Clang type generation.

Make CHECK_CLANG_TYPE_MATCH take the result to return rather than a
field name of the Clang ASTContext, and guard uses of macro parameters
with parens.

Swift SVN r12605

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