- fix hosts map use after free.
    - fix uri list locking (again).
    - check for stale SASL credentials upon connect fail.
    - add "forcestart" and "forcerestart" init script options to allow use of
        5.0.3 strartup behavior if required.
    - always read entire file map into cache to speed lookups.
    - make MAX_ERR_BUF and PARSE_MAX_BUF use easier to audit.
    - make some easy alloca replacements.
    - update to configure libtirpc if present.
    - update to provide ipv6 name and address support.
    - update to provide ipv6 address parsing.