I commited a change to the real-time clock offset.  When you build a
kernel from -current and reboot, the kernel will warn that the clock
gained 365 days.  You should re-set the time after rebooting.

This is to work around an ugly problem with the DECstation PROMs,
which force the battery-backed-up RTC to always read either 1972 or 1973.

Perhaps a better fix is to use the RTC as time-of-year clock, and to
extract the current year from the filesystem. Volunteers to write the
code that will be eagerly accepted :).