[Swift-devel] wrapper.sh logging

[Ben Clifford]

As of r1406, there's a new config option 'sitedir.keep' which defaults
to false (preserving existing behaviour).

If this option is set to true, then swift will not clean up the site 
working directory at the end of a workflow. This will leave info/ records 
in place rather than deleting them.

The info records now contain timestamps and state information, and the 
log-processing code contains some more stuff to graph that information.

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