753255c30c
`isSingleUse()` should return `false` by default - the whole point is to bind a connection to a thread. The TACCF should have its own flag not return the delegate's. Also, the `TcpReceivingChanneladapter` calls `closeConnection(connectionId)`. This should be a no-op for the TACCF since the proper way to close a connection is to call `releaseConnection()` on the thread to which the connection is bound. **cherry-pick to 5.0.x**