If we have a replica set, set write-majority
Test that write-majority is not set when there's no replica set
Test setting of WMode
Set J:true unconditionally for the mongo session
Merge branch 'master' of https://github.com/juju/juju into write-majority
Increase dial timeout to wait for mongo
Merge branch 'master' into write-majority
Merge pull request #17 from voidspace/write-majority