cylc/cylc — pull request #328 by arjclark (2013-03-04 15:25:30+00:00)
Title: Db tidy

This makes a number of minor changes to reduce the amount of redundant data recorded in the suite db as requested by @matthewrmshin and adds in some missing information:

* redundant messages removed from task events table e.g. we now have: `|submitted||` instead of `|submitted|task submitted|`
* in the task events table, the host is only recorded in the `submitted` event - this also fixes a bug whereby the owner@host value wasn't recorded right in the submitted event
* task signal messages are now recorded in the task events tables as a "signaled" event i.e. any message starting "Task job script received signal" is now recorded
* an entry is recorded in the task events table when a task enters the retry state