1a80b97 util: Add function virCgroupHasEmptyTasks

Authored and Committed by mkletzan 9 years ago
    util: Add function virCgroupHasEmptyTasks
    
    That function helps checking whether there's a task in that cgroup.
    
    Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
    
        
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