[Merge] ~3v1n0/ubuntu/+source/nautilus:ubuntu/master-fix-recursive-engines into ~ubuntu-desktop/ubuntu/+source/nautilus:ubuntu/master

[Andrea Azzarone]

Also this commit looks broken: https://git.launchpad.net/~3v1n0/ubuntu/+source/nautilus/commit/?h=ubuntu/master-fix-recursive-engines&id=c7d0a0b65709f3b7765d9d46d3ac9b7dfe3c2b47

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https://code.launchpad.net/~3v1n0/ubuntu/+source/nautilus/+git/nautilus/+merge/349670
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