Revert "Only add Sequence to RM protocol message for last message when using RM"
Eliminate redundant change after Aki's commit.
This reverts commit a2962773cbad6c88cb4d651c3199e45b352a5972.
Improve reliability of test by ignoring the exact order of callbacks, as
long as they're consistent (messages accepted in order, one and only one
ack per message, messages always accepted before acked).
Eliminate println()s used for looking at callback ordering issues.
[CXF-3272] Return acknowledgement rather than Fault when duplicate
message received.
Add simple test for decoupled client oneway operation.