Licensing of MogileFS Mediawiki Module?

[Steve Williams]

I've created a Mogile package suitable for submission to PEAR, but 
I'm concerned about the licensing, as I started from this Mediawiki module:

http://svn.wikimedia.org/viewvc/mediawiki/trunk/extensions/MogileClient/

Mediawiki is GPL licensed, if I understand, but PEAR doesn't allow 
that particular license:

http://pear.php.net/manual/en/faq.devs.php#faq.licenses

I'm trying to get in touch with the author of the Mediawiki module,
Domas Mituzas:

http://dammit.lt/

Perhaps he (she?) can clarify whether Mediawiki contributors assign 
copyright to Mediawiki.  If not, perhaps Domas will allow us to 
license our derivative package under BSD.