Switch the default locale to C.UTF-8 before FreeBSD 13

[Baptiste Daroussin]

Hello everyone,

I would like to switch the default locale to C.UTF-8 in FreeBSD 13.0

https://reviews.freebsd.org/D26973

The C.UTF-8 locales is the same as the actual C locale except it does support
the unicode character set. But the collation (aka how sort is being done) etc
are still the same as the C locale.

What opinion on the matter?

Best regards,
Bapt