Threads are not completely cleaned when an executor service
is configured with type INSTANCE for a sub program.
See: https://github.com/awltech/org.parallelj/issues/98
Merge branch 'master' of https://github.com/awltech/org.parallelj

# By mvanbesien
# Via mvanbesien
* 'master' of https://github.com/awltech/org.parallelj:
  Updated authors