Bug correction + add junit test for listeners (errors, user's return code, In/Out)
Merge branch 'incubation' of https://github.com/awltech/org.parallelj into incubation

* 'incubation' of https://github.com/awltech/org.parallelj:
  Bug correction + add junit test for listeners (errors, user's return code)

Conflicts:
	parallelj-launching/src/test/java/org/parallelj/launching/programs/ListenersTest.java