INTSAMPLES-106 JMS: Eliminate Hijack of stdout

Caused unusual behavior when exceptions occurred, or debug
logging enabled.

Now uses Spring profiles to route the output to a QueueChannel
instead.
Merge pull request #88 from garyrussell/INTSAMPLES-106

* garyrussell-INTSAMPLES-106:
  INTSAMPLES-106 JMS: Eliminate Hijack of stdout