Manage how many times an active object is retried, and tweak the next processing date based on the number of retries. Also, when there is no active object available, shift the time to go ahead quickly.


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@4223 20353a03-c40f-0410-a6d1-a30d3c3de9de