2237ea3ddb
Make synchronous APIs take GCancellables, and make asynchronous APIs use GAsyncReadyCallbacks and have names ending in "_async", with "_finish" functions to retrieve the results. Also, make nm_client_activate_connection_finish(), nm_client_add_and_activate_finish(), and nm_remote_settings_add_connection_finish() be (transfer full) rather than (transfer none), because the refcounting semantics become slightly confusing in some edge cases otherwise.