[COLLECTIONS] Drop the IndexedLinkedList idea?

[Efremov, Rodion]

I just analyzed the JMH output. These are the sums over all operations for each 
list implementation:

    ExtendedTreeList:   8795012,354
    ArrayList:               1287707,460
    IndexedLinkedList: 1319267,365
    LinkedList:                  1829376,687

Clearly, my list implementation does not improve on ArrayList. Should we drop 
the idea of putting the ILL to Collections?

Best regards,
rodde