ClangImporter: Set the 'throws' bit on a few CallExprs
ClangImporter: Set the 'throws' bit on a few CallExprs

This allows Sema to skip checking external definitions altogether.

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