Since JBossTM rollsback transactions at transaction timeout,
we need to tidyup the transaction demarcation code (commit/rollback/setRollbackOnly, etc)
such that the logging is more information and not so noisy.

We still need to communicate that the transaction rolled back even if it is not
the transaction demarcation point that does the rollback.

Currrently, you get errors/warnings about not being able to setRollbackOnly or rollback,
because the transaction is already ended.