[Merge] ~khurshid-alam/ubuntu/+source/gnome-session:master into ~ubuntu-desktop/ubuntu/+source/gnome-session:ubuntu/master

[Didier Roche]

Review: Approve

+1 LGTM. I'll give a build test and sponsor
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https://code.launchpad.net/~khurshid-alam/ubuntu/+source/gnome-session/+git/gnome-session/+merge/363153
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