[ConstraintSystem] Account for duplicate archetype bindings in IsDeclRefinementOfRequest.
[ConstraintSystem] Account for duplicate archetype bindings
in IsDeclRefinementOfRequest.

benlangmuir/swift,apple/swift,rudkx/swift,tkremenek/swift,JGiola/swift,hooman/swift,hooman/swift,rudkx/swift,atrick/swift,apple/swift,gregomni/swift,glessard/swift,glessard/swift,roambotics/swift,ahoppen/swift,rudkx/swift,atrick/swift,glessard/swift,tkremenek/swift,xwu/swift,parkera/swift,JGiola/swift,JGiola/swift,benlangmuir/swift,hooman/swift,xwu/swift,xwu/swift,parkera/swift,ahoppen/swift,roambotics/swift,roambotics/swift,gregomni/swift,atrick/swift,tkremenek/swift,gregomni/swift,parkera/swift,xwu/swift,parkera/swift,atrick/swift,apple/swift,tkremenek/swift,benlangmuir/swift,rudkx/swift,gregomni/swift,xwu/swift,glessard/swift,apple/swift,benlangmuir/swift,tkremenek/swift,ahoppen/swift,rudkx/swift,glessard/swift,ahoppen/swift,apple/swift,apple/swift,parkera/swift,roambotics/swift,roambotics/swift,roambotics/swift,hooman/swift,JGiola/swift,gregomni/swift,parkera/swift,parkera/swift,benlangmuir/swift,gregomni/swift,ahoppen/swift,hooman/swift,ahoppen/swift,parkera/swift,JGiola/swift,atrick/swift,xwu/swift,benlangmuir/swift,tkremenek/swift,xwu/swift,tkremenek/swift,JGiola/swift,hooman/swift,atrick/swift,glessard/swift,hooman/swift,rudkx/swift