[Type checker] Request overrides as part of member layout.
[Type checker] Request overrides as part of member layout.

When Objective-C interop was enabled, we were getting overrides
precomputed as part of the isObjC() check. Explicitly make sure we
get overrides precompiled for non-Objective-C-based platforms.
rudkx/swift,alblue/swift,sschiau/swift,hooman/swift,nathawes/swift,hooman/swift,practicalswift/swift,jmgc/swift,lorentey/swift,rudkx/swift,aschwaighofer/swift,danielmartin/swift,gribozavr/swift,apple/swift,xedin/swift,natecook1000/swift,shajrawi/swift,stephentyrone/swift,sschiau/swift,jckarter/swift,allevato/swift,harlanhaskins/swift,glessard/swift,shajrawi/swift,practicalswift/swift,aschwaighofer/swift,parkera/swift,gribozavr/swift,austinzheng/swift,airspeedswift/swift,sschiau/swift,danielmartin/swift,alblue/swift,gregomni/swift,austinzheng/swift,danielmartin/swift,brentdax/swift,xwu/swift,CodaFi/swift,shajrawi/swift,alblue/swift,allevato/swift,shajrawi/swift,austinzheng/swift,allevato/swift,natecook1000/swift,apple/swift,lorentey/swift,parkera/swift,nathawes/swift,brentdax/swift,ahoppen/swift,natecook1000/swift,xwu/swift,benlangmuir/swift,shahmishal/swift,brentdax/swift,ahoppen/swift,jmgc/swift,shahmishal/swift,alblue/swift,apple/swift,karwa/swift,jckarter/swift,roambotics/swift,stephentyrone/swift,amraboelela/swift,brentdax/swift,practicalswift/swift,xwu/swift,natecook1000/swift,karwa/swift,lorentey/swift,gribozavr/swift,devincoughlin/swift,jopamer/swift,tkremenek/swift,lorentey/swift,benlangmuir/swift,rudkx/swift,nathawes/swift,glessard/swift,gregomni/swift,rudkx/swift,jopamer/swift,tkremenek/swift,amraboelela/swift,rudkx/swift,allevato/swift,lorentey/swift,CodaFi/swift,natecook1000/swift,benlangmuir/swift,aschwaighofer/swift,JGiola/swift,xwu/swift,tkremenek/swift,shahmishal/swift,sschiau/swift,xedin/swift,aschwaighofer/swift,xedin/swift,devincoughlin/swift,shahmishal/swift,practicalswift/swift,allevato/swift,jopamer/swift,harlanhaskins/swift,airspeedswift/swift,roambotics/swift,JGiola/swift,gribozavr/swift,glessard/swift,austinzheng/swift,jckarter/swift,gregomni/swift,alblue/swift,sschiau/swift,karwa/swift,lorentey/swift,JGiola/swift,xedin/swift,CodaFi/swift,harlanhaskins/swift,austinzheng/swift,airspeedswift/swift,harlanhaskins/swift,parkera/swift,hooman/swift,jopamer/swift,jmgc/swift,austinzheng/swift,shahmishal/swift,jmgc/swift,roambotics/swift,stephentyrone/swift,parkera/swift,tkremenek/swift,practicalswift/swift,harlanhaskins/swift,shajrawi/swift,airspeedswift/swift,ahoppen/swift,jckarter/swift,shahmishal/swift,nathawes/swift,apple/swift,shajrawi/swift,shajrawi/swift,amraboelela/swift,karwa/swift,xwu/swift,atrick/swift,practicalswift/swift,apple/swift,atrick/swift,parkera/swift,gregomni/swift,atrick/swift,danielmartin/swift,karwa/swift,practicalswift/swift,lorentey/swift,atrick/swift,amraboelela/swift,practicalswift/swift,harlanhaskins/swift,devincoughlin/swift,parkera/swift,danielmartin/swift,karwa/swift,gribozavr/swift,parkera/swift,tkremenek/swift,parkera/swift,CodaFi/swift,xwu/swift,CodaFi/swift,gribozavr/swift,hooman/swift,lorentey/swift,xedin/swift,jmgc/swift,CodaFi/swift,brentdax/swift,JGiola/swift,jmgc/swift,aschwaighofer/swift,stephentyrone/swift,allevato/swift,devincoughlin/swift,roambotics/swift,stephentyrone/swift,airspeedswift/swift,ahoppen/swift,harlanhaskins/swift,austinzheng/swift,devincoughlin/swift,devincoughlin/swift,gregomni/swift,sschiau/swift,shahmishal/swift,JGiola/swift,stephentyrone/swift,hooman/swift,CodaFi/swift,xwu/swift,sschiau/swift,jckarter/swift,roambotics/swift,glessard/swift,glessard/swift,natecook1000/swift,jckarter/swift,jopamer/swift,gribozavr/swift,ahoppen/swift,sschiau/swift,natecook1000/swift,roambotics/swift,amraboelela/swift,benlangmuir/swift,benlangmuir/swift,jopamer/swift,ahoppen/swift,benlangmuir/swift,glessard/swift,shahmishal/swift,JGiola/swift,brentdax/swift,xedin/swift,tkremenek/swift,xedin/swift,allevato/swift,stephentyrone/swift,amraboelela/swift,brentdax/swift,aschwaighofer/swift,rudkx/swift,karwa/swift,airspeedswift/swift,devincoughlin/swift,jckarter/swift,atrick/swift,shajrawi/swift,amraboelela/swift,hooman/swift,devincoughlin/swift,nathawes/swift,nathawes/swift,alblue/swift,aschwaighofer/swift,tkremenek/swift,nathawes/swift,hooman/swift,gribozavr/swift,jmgc/swift,airspeedswift/swift,danielmartin/swift,alblue/swift,jopamer/swift,karwa/swift,apple/swift,danielmartin/swift,gregomni/swift,xedin/swift,atrick/swift