packager.sh: more consistent parameters management
packager.sh: more consistent parameters management


Former-commit-id: d075db1af282c17536c288b94c9ec8d63abd1e66 [formerly 6a191d2197dbb2104ccbc107a77a3fe463bb1886]
Former-commit-id: b401de0e98844c9971977f0ff8844a8c7859fe68
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine