More: Don't use DataHelper.readLong() for 1-byte reads, for efficiency

...eaming/java/src/net/i2p/client/streaming/impl/Packet.java

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

...ava/src/net/i2p/data/i2np/DatabaseSearchReplyMessage.java

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

router/java/src/net/i2p/data/i2np/FastI2NPMessageImpl.java

router/java/src/net/i2p/data/i2np/I2NPMessageHandler.java

router/java/src/net/i2p/data/i2np/I2NPMessageImpl.java

...ava/src/net/i2p/data/i2np/VariableTunnelBuildMessage.java

...rc/net/i2p/data/i2np/VariableTunnelBuildReplyMessage.java

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

router/java/src/net/i2p/router/tunnel/BuildReplyHandler.java

router/java/src/net/i2p/router/tunnel/FragmentHandler.java