Language fixups.

core/java/src/net/i2p/util/ResettableGZIPInputStream.java

history.txt

router/java/src/net/i2p/data/i2np/DataMessage.java

router/java/src/net/i2p/data/i2np/DeliveryInstructions.java

router/java/src/net/i2p/data/i2np/I2NPMessageReader.java

router/java/src/net/i2p/data/i2np/TunnelGatewayMessage.java

router/java/src/net/i2p/data/i2np/UnknownI2NPMessage.java

router/java/src/net/i2p/data/router/RouterInfo.java

router/java/src/net/i2p/router/Banlist.java

router/java/src/net/i2p/router/JobQueue.java

router/java/src/net/i2p/router/JobQueueRunner.java

router/java/src/net/i2p/router/Router.java

router/java/src/net/i2p/router/dummy/VMCommSystem.java

...java/src/net/i2p/router/message/SendMessageDirectJob.java

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

...net/i2p/router/networkdb/kademlia/IterativeLookupJob.java

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

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

...java/src/net/i2p/router/networkdb/kademlia/SearchJob.java

.../router/networkdb/kademlia/SearchUpdateReplyFoundJob.java