Store each connection window slot as a database row.

api/net/sf/briar/api/protocol/ProtocolConstants.java

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

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

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

components/net/sf/briar/crypto/CryptoModule.java

components/net/sf/briar/db/Database.java

components/net/sf/briar/db/DatabaseComponentImpl.java

components/net/sf/briar/db/JdbcDatabase.java

components/net/sf/briar/serial/ReaderImpl.java

...ents/net/sf/briar/transport/ConnectionRecogniserImpl.java

...s/net/sf/briar/transport/ConnectionWindowFactoryImpl.java

components/net/sf/briar/transport/ConnectionWindowImpl.java

test/net/sf/briar/db/BasicH2Test.java

test/net/sf/briar/db/H2DatabaseTest.java

test/net/sf/briar/protocol/ConsumersTest.java

test/net/sf/briar/serial/WriterImplTest.java

test/net/sf/briar/transport/ConnectionDecrypterImplTest.java

.../net/sf/briar/transport/ConnectionRecogniserImplTest.java

test/net/sf/briar/transport/ConnectionWindowImplTest.java