Otherwise, "discovery -f" will take up to twice as long to return, while it waits for the currently running scan to complete and then kicks off a new scan and waits for that to complete. That could be confusing or frustrating to users.
Done in master: http://git.fedorahosted.org/git?p=rhq/rhq.git;a=commitdiff;h=15d7dca
Bulk closing of items that are on_qa and in old RHQ releases, which are out for a long time and where the issue has not been re-opened since.