Ticket #48834 - Modifier's name is not recorded in the audit log with modrdn and moddn operations
    
    Description: Audit log had no support on modifier's name and newsuperior,
    which is now appended to the log:
      time: 20160518144610
      dn: uid=tuser1,ou=People,dc=example,dc=com
      result: 0
      changetype: modrdn
      newrdn: uid=tuser10
      deleteoldrdn: 1
      newsuperior: ou=OU0,ou=People,dc=example,dc=com
      modifiersname: cn=directory manager
    
    https://fedorahosted.org/389/ticket/48834
    
    Reviewed by mreynolds@redhat.com (Thank you, Mark!!)