UPDATE 3-Brighter outlook for M&S chief after first profit rise in four years
* Full-year profit before tax and one-offs up 6 pct * Dividend raised by 5.9 pct to 18 pence * Plans 150 mln stg share buyback * Shares up 0.3 pct, 35 pct rise in 9 months (Adds CEO, analyst comment, updates shares) By James Davey LONDON, May 20 (Reuters) - British
