Converted {Incoming,Outgoing}BatchConnection into Runnables.

Also changed the dispose() method of readers/writers/connections to
swallow any exceptions that occur, since the caller can't do anything
except log them.

api/net/sf/briar/api/transport/BatchTransportReader.java

@@ -1,6 +1,5 @@
 package net.sf.briar.api.transport;
 
-import java.io.IOException;
 import java.io.InputStream;
 
 /**
@@ -16,5 +15,5 @@ public interface BatchTransportReader {
 	 * Closes the reader and disposes of any associated state. The argument
 	 * should be false if an exception was thrown while using the reader.
 	 */
-	void dispose(boolean success) throws IOException;
+	void dispose(boolean success);
 }

api/net/sf/briar/api/transport/BatchTransportWriter.java

@@ -1,6 +1,5 @@
 package net.sf.briar.api.transport;
 
-import java.io.IOException;
 import java.io.OutputStream;
 
 /**
@@ -19,5 +18,5 @@ public interface BatchTransportWriter {
 	 * Closes the writer and disposes of any associated state. The argument
 	 * should be false if an exception was thrown while using the writer.
 	 */
-	void dispose(boolean success) throws IOException;
+	void dispose(boolean success);
 }

api/net/sf/briar/api/transport/StreamTransportConnection.java

@@ -21,5 +21,5 @@ public interface StreamTransportConnection {
 	 * Closes the connection and disposes of any associated state. The argument
 	 * should be false if an exception was thrown while using the connection.
 	 */
-	void dispose(boolean success) throws IOException;
+	void dispose(boolean success);
 }

api/net/sf/briar/api/transport/batch/BatchConnectionFactory.java

@@ -0,0 +1,15 @@
+package net.sf.briar.api.transport.batch;
+
+import net.sf.briar.api.ContactId;
+import net.sf.briar.api.TransportId;
+import net.sf.briar.api.transport.BatchTransportReader;
+import net.sf.briar.api.transport.BatchTransportWriter;
+
+public interface BatchConnectionFactory {
+
+	Runnable createOutgoingConnection(TransportId t, ContactId c,
+			BatchTransportWriter w);
+
+	Runnable createIncomingConnection(ContactId c, BatchTransportReader r,
+			byte[] encryptedIv);
+}