[CS] Account for type variables when matching metatypes
[CS] Account for type variables when matching metatypes

Previously we could prematurely attempt to perform
a bind of class metatypes without checking for
subtyping. Tweak the logic to not perform a bind
if we can't prove that we're dealing with non-class
types.

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