[ClangImporter] Check for API-note-provided attributes by source loc (#16704)
[ClangImporter] Check for API-note-provided attributes by source loc (#16704)

...rather than by whether they're implicit. We're planning to make
them explicit (prompted by a change in upstream Clang that no longer
prints implicit attributes).

rdar://problem/40346997 (Swift side)
brentdax/swift,austinzheng/swift,tkremenek/swift,glessard/swift,atrick/swift,nathawes/swift,atrick/swift,gregomni/swift,gregomni/swift,parkera/swift,jopamer/swift,karwa/swift,harlanhaskins/swift,roambotics/swift,gregomni/swift,shajrawi/swift,xwu/swift,airspeedswift/swift,shahmishal/swift,stephentyrone/swift,aschwaighofer/swift,hooman/swift,karwa/swift,lorentey/swift,danielmartin/swift,xedin/swift,aschwaighofer/swift,stephentyrone/swift,amraboelela/swift,karwa/swift,brentdax/swift,brentdax/swift,natecook1000/swift,natecook1000/swift,jckarter/swift,austinzheng/swift,amraboelela/swift,benlangmuir/swift,sschiau/swift,allevato/swift,airspeedswift/swift,tkremenek/swift,practicalswift/swift,practicalswift/swift,jopamer/swift,amraboelela/swift,jmgc/swift,shajrawi/swift,brentdax/swift,danielmartin/swift,karwa/swift,xedin/swift,shahmishal/swift,brentdax/swift,hooman/swift,shajrawi/swift,gribozavr/swift,harlanhaskins/swift,CodaFi/swift,atrick/swift,practicalswift/swift,airspeedswift/swift,xwu/swift,harlanhaskins/swift,austinzheng/swift,sschiau/swift,airspeedswift/swift,shajrawi/swift,jckarter/swift,benlangmuir/swift,xedin/swift,CodaFi/swift,roambotics/swift,atrick/swift,karwa/swift,hooman/swift,hooman/swift,shahmishal/swift,sschiau/swift,brentdax/swift,jmgc/swift,airspeedswift/swift,tkremenek/swift,natecook1000/swift,JGiola/swift,alblue/swift,danielmartin/swift,JGiola/swift,tkremenek/swift,xedin/swift,sschiau/swift,xwu/swift,apple/swift,roambotics/swift,allevato/swift,parkera/swift,stephentyrone/swift,atrick/swift,xwu/swift,gregomni/swift,xedin/swift,practicalswift/swift,JGiola/swift,allevato/swift,aschwaighofer/swift,glessard/swift,jopamer/swift,shahmishal/swift,jopamer/swift,nathawes/swift,gribozavr/swift,shahmishal/swift,shajrawi/swift,benlangmuir/swift,rudkx/swift,danielmartin/swift,tkremenek/swift,rudkx/swift,austinzheng/swift,ahoppen/swift,harlanhaskins/swift,devincoughlin/swift,nathawes/swift,airspeedswift/swift,lorentey/swift,apple/swift,lorentey/swift,jopamer/swift,alblue/swift,alblue/swift,ahoppen/swift,glessard/swift,nathawes/swift,hooman/swift,lorentey/swift,parkera/swift,parkera/swift,benlangmuir/swift,shahmishal/swift,sschiau/swift,parkera/swift,roambotics/swift,gribozavr/swift,shajrawi/swift,benlangmuir/swift,JGiola/swift,gregomni/swift,nathawes/swift,alblue/swift,xwu/swift,xwu/swift,xwu/swift,danielmartin/swift,devincoughlin/swift,JGiola/swift,alblue/swift,sschiau/swift,rudkx/swift,allevato/swift,jopamer/swift,sschiau/swift,gribozavr/swift,amraboelela/swift,jckarter/swift,CodaFi/swift,glessard/swift,nathawes/swift,rudkx/swift,devincoughlin/swift,harlanhaskins/swift,apple/swift,stephentyrone/swift,natecook1000/swift,harlanhaskins/swift,devincoughlin/swift,aschwaighofer/swift,atrick/swift,natecook1000/swift,alblue/swift,amraboelela/swift,lorentey/swift,xedin/swift,sschiau/swift,xedin/swift,parkera/swift,practicalswift/swift,jmgc/swift,shajrawi/swift,parkera/swift,natecook1000/swift,shahmishal/swift,gribozavr/swift,jmgc/swift,jmgc/swift,shajrawi/swift,practicalswift/swift,airspeedswift/swift,ahoppen/swift,lorentey/swift,apple/swift,karwa/swift,aschwaighofer/swift,allevato/swift,gregomni/swift,devincoughlin/swift,jmgc/swift,harlanhaskins/swift,roambotics/swift,alblue/swift,CodaFi/swift,jckarter/swift,apple/swift,devincoughlin/swift,aschwaighofer/swift,hooman/swift,benlangmuir/swift,practicalswift/swift,karwa/swift,tkremenek/swift,nathawes/swift,xedin/swift,rudkx/swift,lorentey/swift,ahoppen/swift,rudkx/swift,JGiola/swift,amraboelela/swift,natecook1000/swift,devincoughlin/swift,glessard/swift,ahoppen/swift,aschwaighofer/swift,danielmartin/swift,shahmishal/swift,hooman/swift,jmgc/swift,CodaFi/swift,apple/swift,jopamer/swift,jckarter/swift,practicalswift/swift,CodaFi/swift,parkera/swift,glessard/swift,gribozavr/swift,danielmartin/swift,tkremenek/swift,amraboelela/swift,ahoppen/swift,lorentey/swift,karwa/swift,austinzheng/swift,roambotics/swift,allevato/swift,jckarter/swift,gribozavr/swift,jckarter/swift,stephentyrone/swift,austinzheng/swift,devincoughlin/swift,austinzheng/swift,allevato/swift,brentdax/swift,stephentyrone/swift,gribozavr/swift,CodaFi/swift,stephentyrone/swift