RequirementMachine: Add some tests for concrete type unification
RequirementMachine: Add some tests for concrete type unification

JGiola/swift,glessard/swift,atrick/swift,apple/swift,atrick/swift,rudkx/swift,JGiola/swift,benlangmuir/swift,benlangmuir/swift,gregomni/swift,gregomni/swift,rudkx/swift,roambotics/swift,apple/swift,ahoppen/swift,ahoppen/swift,ahoppen/swift,benlangmuir/swift,glessard/swift,benlangmuir/swift,ahoppen/swift,rudkx/swift,roambotics/swift,roambotics/swift,glessard/swift,JGiola/swift,atrick/swift,rudkx/swift,glessard/swift,apple/swift,glessard/swift,ahoppen/swift,rudkx/swift,JGiola/swift,JGiola/swift,glessard/swift,gregomni/swift,gregomni/swift,roambotics/swift,apple/swift,atrick/swift,apple/swift,atrick/swift,JGiola/swift,roambotics/swift,atrick/swift,gregomni/swift,apple/swift,benlangmuir/swift,roambotics/swift,ahoppen/swift,rudkx/swift,gregomni/swift,benlangmuir/swift