K 10
svn:author
V 5
gonzo
K 8
svn:date
V 27
2020-04-03T01:17:43.390825Z
K 7
svn:log
V 360
Fix calculation of the recurring weekdays

Both the result of the first_dayofweek_of_year and the target
weekday are zero-based (0 fo sunday) while the target month-day
or year-day is 1-based. Adjust logic accordingly.

Also add testcase for this PR to the kyua test suite

PR:		201062
Submitted by:	Richard Narron <comet.berkeley@gmail.com>
MFC after:	1 week

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