Ticket 20 - DS returns error 20 when replacing values of a multi-valued attribute (only when replication is enabled)
    
    Bug Description:  When replacing an attr value "SOME_VALUE" with "some_value", and replication
                      is enabled, an error 20(type or value exists) is incorrectly returned.
    
    Fix Description:  For replace operations we were doing a bit-by-bit comparison.  Ignoring the syntax
                      of the attribute.  The fix was to remove this bit-by-bit check that is no longer
                      necessary with the current code base.
    
    https://fedorahosted.org/389/ticket/570
    
    Reviewed by: Noriko(Thanks!)