MODE-1683 Simplified message consuming & receiving; updated delta reconciliation implementation and MapDB version to 0.9.8.
MODE-1683 Added a method for retrieving the last record of a journal. Changed the signature of the methods which used long timestamps to use DateTime(s) and removed unnecessary conversions to UTC.
MODE-1683 Changed from normal timestamps to time-based keys and updated various other parts of the code based on code review.
MODE-2143 Changed the default networking stack of ModeShape build to prefer IPv6

Changed the default networking stack to prefer IPv6, except in the
"integration/modeshape-jbossas-integration-tests" module that uses Arquillian
(which is limited to IPv4 on Windows; see JBPAPP-9281 for details) to run
EAP on IPv4. In that module, we also have to force our tests to use IPv4.
MODE-2041 Corrected numerous compiler warninings, JavaDoc errors and warnings, and removed
quite a few JavaDoc comments that are inherited via @Override.
MODE-2041 Corrected several Maven warnings by putting more of the test artifacts into the parent POM.