mozilla-services/circus — pull request #25 by benoitc (2012-03-04 17:53:55+00:00)
Title: add flapping detection 

This feature add flapping detection to prevent infinite restart loop in
a show.

A show take now 4 more parameters:

- times : number of times a fly could be started before we test it.
- within: the period in which we are testing this number of times
- retry_in: tiwe we wait until we try to start a new fly
- max_retry: the number of times we will retry to launch beflies before
we stop a show.

While I'm here fix OSError case