New field: p_sleepend; so that settime() can adjust the expected wakeup time for things like nanosleep.  These sleep in terms of "ticks" and calculate the elapsed time relative to the expected wakeup time and do not return good results when the system time is adjusted.
New field: p_sleepend; so that settime() can adjust the expected wakeup
time for things like nanosleep.  These sleep in terms of "ticks" and
calculate the elapsed time relative to the expected wakeup time and do
not return good results when the system time is adjusted.

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