Changes since OpenNTPD 5.7p3
============================
* Added support for using HTTPS time constraints to validate NTP responses.
* Workaround a bug in the Solaris adjtime call that caused the olddelta to
never reach 0, leading to continual sync/unsync messages from ntpd.
* Workaround an overflow on systems with 32-bit time_t. This can result in a
failure to set the time if the initial clock is set later than early 2036.
Systems with a 32-bit time_t should upgrade well in advance of this date, but
today this helps with systems that boot with an invalid initial time.
Note:the HTTPS time constraints feature is not currently available
in pkgsrc due to the lack of libtls.
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