[Merge] unity:fix-std-tuple-use into unity:master

[Marco Trevisan (Treviño)]

The change looks good, the problem with armhf looks more a crash inside launchpad.

I tried to debug that in a remote VM but I wasn't able to get much more infos... I see if I can find anything related.

Or we can probably try to publish without armhf.
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https://code.launchpad.net/~unity-team/unity/+git/unity/+merge/359970
Your team Unity Team is requested to review the proposed merge of unity:fix-std-tuple-use into unity:master.