Fixed a race conditon when adding a transport and then an endpoint.

To fix issue #3611966, KeyManagerImpl's handling of TransportAddedEvent
was made asynchronous. This made it possible for a thread to call
KeyManager.endpointAdded() before the KeyManager had asynchronously
handled the TransportAddedEvent from a previous call to
DatabaseComponent.addTransport().

briar-api/src/net/sf/briar/api/crypto/KeyManager.java

@@ -27,5 +27,5 @@ public interface KeyManager {
 	 * Called whenever an endpoint has been added. The initial secret
 	 * is erased before returning.
 	 */
-	void endpointAdded(Endpoint ep, byte[] initialSecret);
+	void endpointAdded(Endpoint ep, long maxLatency, byte[] initialSecret);
 }