consolidate maxMemory() calls

core/java/src/net/i2p/crypto/YKGenerator.java

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

core/java/src/net/i2p/data/SDSCache.java

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

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

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

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

core/java/src/net/i2p/util/SimpleTimer2.java

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

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

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

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

router/java/src/net/i2p/router/transport/TransportImpl.java

.../net/i2p/router/transport/crypto/DHSessionKeyBuilder.java

...r/java/src/net/i2p/router/transport/ntcp/EventPumper.java

...ava/src/net/i2p/router/transport/ntcp/NTCPConnection.java

...a/src/net/i2p/router/transport/ntcp/NTCPSendFinisher.java

...java/src/net/i2p/router/transport/ntcp/NTCPTransport.java

...ava/src/net/i2p/router/transport/udp/MessageReceiver.java

.../java/src/net/i2p/router/transport/udp/PacketHandler.java