MediaWiki: namespace and customizable messages

I wrote:
>I would like to change meta's 'meta namespace' from 
>'Wikipedia' to 'Meta.Wikimedia' but I already made some 
>changes to meta's interface using the MediaWiki 
>namespace. So my question is this; how do I get my 
>hands on meta's most up-to-date version of language.php?

Scratch that. I now think that simply having 'meta' as the meta namespace of 
the wiki now at http://meta.wikipedia.org would be best. 

Keep it simple and true to what people actually call the place.

--mav