Remove unnecessary cron cruft that errors on modern gcc (#403)

* Remove unnecessary cron cruft that errors on modern gcc

* Fix ecodes and cron_timezone compile error

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Co-authored-by: Marco Slot <marco.slot@snowflake.com>

Return to 6 argument version of PortalDefineQuery

Revert "Remove unnecessary lastStartTime reset"

This reverts commit d90843d.

Merge pull request #317 from japinli/illumos

Fix compiler error on Illumos

- Fixes off-by-1 issue in day of month