By Scott Murdoch SYDNEY (Reuters) - Santos CEO Kevin Gallagher said on Friday he has no plans to retire and expects a sharp jump in cash flow in the next few years to boost the Australian gas producer's shares, after its third suitor in seven years did not proceed with a takeover bid. An $18.7 billion bid for Santos by a consortium led by Abu Dhabi National Oil Company (ADNOC) collapsed on Wednesday over disagreements on commercial terms, which sparked analyst speculation that Gallagher, in the job since ...