[Foundation-l] Template initialisation script

To complete the conversion of the wikipedias to MediaWiki 1.3, I'm going 
to run a script which does the following:

* Moves every page in the MediaWiki namespace which is not an internal 
message, to the Template namespace, unless there is already a page at 
the target location
* In all pages linking to the moved pages, or including a template, 
{{msg:pagename}} will be converted to {{pagename}}, and 
[[MediaWiki:pagename]] will be converted to [[Template:pagename]], where 
pagename is the name of the moved page.

After this is done, a few technical problems involving clearing caches 
when templates are changed will be fixed.

This will probably take a while. There won't be any downtime. Edits will 
be attributed to "Template namespace initialisation script".

-- Tim Starling