Sept 22 (Reuters) - Alstom
* French government looks on possible Alstom-Siemens deal very positively, a senior french source said.
* Alstom-Seimens tie-up would create a competitive group in a difficult market, the source said.
* French authorities will be looking closely at jobs, sites, governance and research and development in case of a successful tie-up, the source said. Source text for Eikon: Further company coverage: (Reporting by Paris Newsroom)