Initial tests for dead letter exchanges
flush after every command rather than every frame
Make java client compile
Merge with default
Update to DLE tests
More tests for DLE
Test for queue purge DL
Test for queue expire DL
Whoops
More tests, added nack for completeness
Tweaked death reason
Merge with default
Merge from default.
merge default into bug 20337
cosmetic tweaks
add DeadLetterExchange to FunctionalTests
Add newConnection() public methods for backwards compatibility
Make constants public.
recode enqueueRpc interrupt handling
Add version to maven-nexus-plugin calls in *-maven-bundle targets