[Merge] lp:~yuningdodo/systemd/systemd.trusty-proposed.lp1313522 into lp:ubuntu/trusty-proposed/systemd

[Yu Ning]

In fact what I want to do is a SRU to trusty, please let me know if I'm doing it in the wrong way. Thanks in advance.
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https://code.launchpad.net/~yuningdodo/systemd/systemd.trusty-proposed.lp1313522/+merge/218597
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