Hi,
I committed a complete rewrite of the Mercurial[1] bundle to the repository.
The Mercurial shortcut is now ctrl + shift + M. I know this key equivalent is already used in some other bundles, but it's the best we could find.
I don't know if there are many Mercurial users here, but if you are one, please give me your feedback.
[1]http://www.selenic.com/mercurial/
-- FredB