Bump version to 1.3.6.13
    CVE-2017-15134 - Remote DoS via search filters in slapi_filter_sprintf
    Ticket 49463 - After cleanALLruv, there is a flow of keep alive DEL
    Ticket 49509 - Indexing of internationalized matching rules is failing
    Ticket 49524 - Password policy: minimum token length fails  when the token length is equal to attribute length
    Ticket 49495 - Fix memory management is vattr.
    Ticket 48118 - Changelog can be erronously rebuilt at startup
    Ticket 49474 - sasl allow mechs does not operate correctly