[ownership] Split ownership lowering in the pass pipeline for non-transparent stdlib vs non-stdlib functions.
[ownership] Split ownership lowering in the pass pipeline for non-transparent stdlib vs non-stdlib functions.

I am going to be moving back ownership lowering first in the stdlib so that we
can bring up the optimizer on ownership without needing to deal with
serialization issues (the stdlib doesn't deserialize SIL from any other
modules).

This patch just begins the mechanical process with a nice commit message. Should
be NFC.

parkera/swift,rudkx/swift,jmgc/swift,ahoppen/swift,atrick/swift,airspeedswift/swift,allevato/swift,parkera/swift,hooman/swift,xwu/swift,ahoppen/swift,nathawes/swift,rudkx/swift,benlangmuir/swift,atrick/swift,tkremenek/swift,hooman/swift,tkremenek/swift,glessard/swift,airspeedswift/swift,apple/swift,apple/swift,rudkx/swift,airspeedswift/swift,parkera/swift,glessard/swift,tkremenek/swift,benlangmuir/swift,jckarter/swift,airspeedswift/swift,parkera/swift,JGiola/swift,JGiola/swift,JGiola/swift,hooman/swift,apple/swift,CodaFi/swift,rudkx/swift,atrick/swift,tkremenek/swift,parkera/swift,nathawes/swift,glessard/swift,hooman/swift,airspeedswift/swift,jmgc/swift,JGiola/swift,airspeedswift/swift,jckarter/swift,allevato/swift,stephentyrone/swift,rudkx/swift,roambotics/swift,ahoppen/swift,xwu/swift,stephentyrone/swift,gregomni/swift,tkremenek/swift,CodaFi/swift,roambotics/swift,nathawes/swift,parkera/swift,hooman/swift,xwu/swift,CodaFi/swift,stephentyrone/swift,CodaFi/swift,jckarter/swift,nathawes/swift,nathawes/swift,jckarter/swift,atrick/swift,allevato/swift,benlangmuir/swift,airspeedswift/swift,xwu/swift,jckarter/swift,nathawes/swift,glessard/swift,allevato/swift,xwu/swift,benlangmuir/swift,stephentyrone/swift,jmgc/swift,parkera/swift,jmgc/swift,ahoppen/swift,allevato/swift,CodaFi/swift,stephentyrone/swift,stephentyrone/swift,tkremenek/swift,gregomni/swift,CodaFi/swift,hooman/swift,roambotics/swift,roambotics/swift,roambotics/swift,glessard/swift,allevato/swift,apple/swift,CodaFi/swift,jckarter/swift,tkremenek/swift,xwu/swift,benlangmuir/swift,jmgc/swift,allevato/swift,jckarter/swift,ahoppen/swift,gregomni/swift,glessard/swift,atrick/swift,JGiola/swift,stephentyrone/swift,atrick/swift,xwu/swift,gregomni/swift,nathawes/swift,apple/swift,apple/swift,hooman/swift,JGiola/swift,benlangmuir/swift,jmgc/swift,gregomni/swift,gregomni/swift,jmgc/swift,parkera/swift,ahoppen/swift,roambotics/swift,rudkx/swift