Autogenerate journal-triggerd.service (and fix a bashism)#8

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svillemot wants to merge 2 commits intojjk-jacky:nextfrom

svillemot:next

Commits on Jan 4, 2017

autogen.sh: remove bashisms (/bin/sh is not bash on all systems).
svillemot
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Make journal-triggerd.service an autogenerated file, with right binary dir.
svillemot
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