Router: update javadoc API version for segmented netDb implementaion

router/java/src/net/i2p/router/ClientManagerFacade.java

router/java/src/net/i2p/router/RouterContext.java

...ava/src/net/i2p/router/client/ClientConnectionRunner.java

router/java/src/net/i2p/router/client/ClientManager.java

...c/net/i2p/router/dummy/DummyNetworkDatabaseSegmentor.java

...er/networkdb/kademlia/FloodfillNetworkDatabaseFacade.java

...networkdb/kademlia/FloodfillNetworkDatabaseSegmentor.java

...ter/networkdb/kademlia/KademliaNetworkDatabaseFacade.java

...rc/net/i2p/router/networkdb/kademlia/LookupThrottler.java

...et/i2p/router/networkdb/kademlia/NegativeLookupCache.java

...er/networkdb/kademlia/SegmentedNetworkDatabaseFacade.java