calcs/hazard/general:
calcs/hazard/general:

Refactored the task complete callback. Now, calculator sublcasses can
more easily implement their own task response callbacks.


Former-commit-id: 909e99918d6d56dcdda335afa09077403aea02e3 [formerly 0eeeed7d3bd3a71dd26f72e769b208d219367bd7] [formerly 0eeeed7d3bd3a71dd26f72e769b208d219367bd7 [formerly 4fb5b9918b93c267622069734fecf524369e0d28]]
Former-commit-id: 882c7b9ca25f29dbcc7edab00789a31d75affaa4
Former-commit-id: 4bc6545dc09722c0b72653319cae47e0e11876b8
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine