bump version to 1.3.1.19
    
    - Ticket 408   - create a normalized dn cache
    - Ticket 571   - Empty control list causes LDAP protocol error is thrown (dup 47361)
    - Ticket 408   - create a normalized dn cache
    - Ticket 525   - Replication retry time attributes cannot be added
    - Ticket 47709 - package issue in 389-ds-base
    - Ticket 415   - winsync doesn't sync DN valued attributes if DS DN value doesn't exist
    - Ticket 47642 - Windows Sync group issues
    - Ticket 47704 - invalid sizelimits in aci group evaluation
    - Ticket 525   - Replication retry time attributes cannot be added
    - Ticket 47692 - single valued attribute replicated ADD does not work
    - Ticket 47677 - Size returned by slapi_entry_size is not accurate
    - Ticket 47693 - Environment variables are not passed when DS is started via service