Clang importer: Handle inference of protocol member availability directly.
Clang importer: Handle inference of protocol member availability directly.

We were inferring protocol member availability as part of filling in
the complete imported protocol. Do it eagerly when we import a member
of a protocol.

khizkhiz/swift,khizkhiz/swift,khizkhiz/swift,khizkhiz/swift,khizkhiz/swift,khizkhiz/swift,khizkhiz/swift