engine:
engine:

Extended the `run_calc` interface to support the option to disable the
job supervisor (and thus, NOT fork the process).


Former-commit-id: 52c7fa1fcd32eeba9042526f9cf4b6d9f2855983 [formerly 52c7fa1fcd32eeba9042526f9cf4b6d9f2855983 [formerly 9bcef1e79b059f643a3960716510842703848168]]
Former-commit-id: 532e8b53adb4966a50678369f0fd908272fb012e
Former-commit-id: 9fd44522055d999915af420c490a6994e7e94810
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine