Backed out previous commit.  The seconds part of microtime() is not the necessarily the same as the seconds part of getmicrotime() yet, and anyway, we should have used `time_second' if we only wanted a sloppy value for the seconds part.  There is no point in making ibcs2's time(2) more efficient than FreeBSD's time(3).
Backed out previous commit.  The seconds part of microtime() is
not the necessarily the same as the seconds part of getmicrotime()
yet, and anyway, we should have used `time_second' if we only wanted
a sloppy value for the seconds part.  There is no point in making
ibcs2's time(2) more efficient than FreeBSD's time(3).

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