Move minimal pair data from PluralRulesFactory.java to xml data file

[pedberg]

Perhaps there is already a ticket about this. Plurals minimal pair data should be moved from PluralRulesFactory.java to an xml data file if possible/

[mark]

I couldn't find the ticket for this, so reopening this in design:

Here would be a cldr config file to add the current patterns.

locale=af; action=add ; new_path=//ldml/dates/pluralMinimalPairPatterns/pluralPattern[@count="one"]; new_value={0} dag
locale=af; action=add ; new_path=//ldml/dates/pluralMinimalPairPatterns/pluralPattern[@count="other"]; new_value={0} dae

...

To get most recent, run GeneratePluralConfirmation.java

[mark]

Added data and structure. TODO

1. Load PluralRulesFactory.SamplePatterns from locales as needed (caching).
2. Move the error code from the loading into a Check* runtime check.
3. Change the CLDR loading code so that it recognizes ordinal= as well as count=.

[mark]

spec and tooling now...

[pedberg]

Need coverage for this. I filed cldrbug 10106: for that.