AST: Don't visit all extensions of a type when doing lazy member lookup
AST: Don't visit all extensions of a type when doing lazy member lookup

Instead only do it while preparing the lookup table.

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