Return a connection context for outgoing connections (the secret will

api/net/sf/briar/api/db/DatabaseComponent.java

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

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

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

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

components/net/sf/briar/db/H2Database.java

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

.../net/sf/briar/transport/ConnectionContextFactoryImpl.java

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

...net/sf/briar/transport/batch/OutgoingBatchConnection.java

...t/sf/briar/transport/stream/OutgoingStreamConnection.java

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

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