Mix of db table charsets causes bad output from Credits API

[demetris]

Migrating from ​#wp17487:

I was playing with my profile page at wp.org and changed the Name field from:

demetris

to:

demetris (Δημήτρης Κίκιζας)

What the API returns for that is:

demetris (???????? ???????)

It seems the API returns its results in ISO 8859-1. Can we change that to UTF-8?

Per @westi, this is because we have a mix of table charsets in the database. To fix it, we need to update hyperdb on wordpress.org, then fix any charset problems. It takes a chunk of time and he's volunteered to do it in a couple of months.

I'll follow up in October.

[ocean90]

Fixed with #117 and #1478.