gem/oq-engine — pull request #940 by larsbutler (2012-11-19 15:37:34+00:00)
Title: Disagg core calc prep

A bit of refactoring in preparation for the implementation of the core disagg calculator.

The bulk of the changes here involve refactoring the general calculator functionality, particularly with task arg generation and task complete callback code.

This is a derivative branch, so the other open PRs should land first for a clean diff.