[Tagging] 'name' variation tags standardisation

[Tobias Knerr]

yarl at o2.pl:
> Now there is a good trend to use colon in key names. Maybe we should
> move these tags below?
> 
> int_name -> name:international
> [...]
> alt_name -> name:alt or name:alternative
> official_name -> name:official
> 
> But then we can have structures like that: name:official:de/ru/etc.

I don't think that we should do that. With alt_name:de, it's clear that
the placement of "alt" and "de" is significant. With name:alt:de, it
could reasonably be expected that the suffixes are commutative: Are
name:de:alt and name:alt:de equivalent?

Oh, and personally, I even like "official_name" (which is the natural
word order) better than name:official.

Tobias Knerr