LC_TIME first_weekday locale consolidation

[Samuel Thibault]

Petr Baudis wrote:
> it has been for long documented that DAY_1 in nl_langinfo() is
> always Sunday and many applicaitons might rely on it; thus, it
> would be probably safer to keep this convention in order to not
> confuse applications that are not aware of first_weekday and week[2]
> (week_1stday).

Then quite a few locales need to be fixed in that direction.  Or we make
these applications get fixed by making the en_US locale be ISO 8601
conforming (i.e. week[2] is 19971201) and let them react.

Samuel