[PATCH v3 0/1] MR10456: vbscript: Implement DatePart built-in function.

[Francis De Brabandere (＠francisdb)]

Implement DatePart(interval, date [, firstdayofweek [, firstweekofyear]])
with support for all interval types: yyyy, q, m, y, d, w, ww, h, n, s.

The week-of-year ("ww") calculation handles all three firstweekofyear
modes (vbFirstJan1, vbFirstFourDays, vbFirstFullWeek) including the
edge case where dates before week 1 belong to the last week of the
previous year. Uses VarUdateFromDate for day-of-year information.

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  v3: vbscript: Implement DatePart built-in function.
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/10456