QPIDJMS-18: make order of constructor args consistent

git-svn-id: https://svn.apache.org/repos/asf/qpid/jms/trunk@1593931 13f79535-47bb-0310-9956-ffa450edef68
QPIDJMS-20: initial work on using AMQP type encoding for sent/received ObjectMessage

git-svn-id: https://svn.apache.org/repos/asf/qpid/jms/trunk@1593932 13f79535-47bb-0310-9956-ffa450edef68