K 10
svn:author
V 4
ache
K 8
svn:date
V 27
2014-01-28T13:29:54.500082Z
K 7
svn:log
V 363
MFC: r261146

Bad timespec_subtract() calculations produce negative tv_nsec on i386
which cause EINVAL returned from nanosleep() which cause loop in
cron_sleep() and making all cron jobs to start about 30 seconds earlier
(which cause f.e. logfiles rotation by newsyslog delayed by 1 hour).

Use simple and proved calculations from kernel's timespecsub() instead.

END