Add support for both Precise and Trusty in debin/postinst
Add support for both Precise and Trusty in debin/postinst


Former-commit-id: 6902ba573899809b8dd3978a475a4feca652045a [formerly 6dac7ecbd62f85eff3ca84a35b2fa793e0e4c687]
Former-commit-id: 3f46afd7294b680f6e4d9ef7b3f877bcd7f0cb64
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine