Ticket 509 - lock-free access to be->be_suffixlock
    
    Bug Description:  This is an amendment to the first patch which was not safe
                      because of the reallocation of the suffix list
    
    Fix Description:  Use a linked list instead of a pointer array, as the array needs to
                      be reallocated which each add.
    
    https://fedorahosted.org/389/ticket/509
    
    Reviewed by: Noriko, and Rich (Thanks!)