calendar(1): Updates and corrections for calendar files

[gbe]

Summary

The calendar(1) files are outdated and sometimes incorrect. I updated
those files by comparing FreeBSDs calendar files across all major BSDs. For the
date corrections I cross-checked wikipedia to see if these corrections are
valid.

PR: 242909, 242918

Test Plan

none, these updates should work as-is.

[imp]

Questions only on two items. Well done! Lincoln's birthday is likely important. Fillmore was in there because he had a funny name, I suspect, and could be omitted if that's not a good enough reason :)

usr.bin/calendar/calendars/calendar.history

18

why remove Fillmore's birthday?
Can you move it to birthdays?

55

why remove Lincoln's birthday?
Can you move it to .birthdays?

[cem]

I appreciate that you spent a lot of time on this, I'm just not sure why it should be shipped by FreeBSD base. Collecting lists of dates is something better suited to online resources like Wikipedia.

[imp]

In D23581#526581, @cem wrote:

I appreciate that you spent a lot of time on this, I'm just not sure why it should be shipped by FreeBSD base. Collecting lists of dates is something better suited to online resources like Wikipedia.

This is not the forum to litigate that battle.

[cem]

I'll just register my token disagreement with the premise and move on.

[gbe]

• Add back Millard Fillmore birthday

[gbe]

@imp I added Millard Fillmore birthday to the respective calendar file. Lincoln's birthday was moved from history to the birthday file.

[gbe]

I made the requested changes for @imp and set this differential to accepted because of the acceptance from @imp and @pfg in the first place.

[imp]

If we're keeping this in the tree, then we should land this.

[pfg]

I thought cem would want to do the commit.
I've been a bit sick, but I'll commit it this week if no one else does.