don't clone actors if no producer is set

Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>
don't change name if the acquaintance does not exist

Link: http://biosal.s3.amazonaws.com/quality-assurance-department/2014-07-17-17:19:07.log
Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>