Steven Glover f14db280f3 Fix for http://issues.alfresco.com/jira/browse/ALF-713.
Can't reproduce the bug but spotted a race condition in UserUsageTrackingComponent that may cause this in rare circumstances. Deal with this by throwing a ConcurrencyFailureException and let the txn retry handler retry the operation.

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@19862 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
2010-04-15 12:38:19 +00:00
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