(In ninth paragraph, corrects to May 10 the date of ConocoPhillips shareholder meeting) By Ross Kerber and Simon Jessop BOSTON/LONDON (Reuters) -Big Oil has enjoyed an easier ride at shareholder meetings so far this year compared with last year’s punishing run of hostile investor votes tied to climate concerns, as those issues have been eclipsed by tight oil supplies. Major oil companies have handily defeated several high-profile climate resolutions brought by shareholder activists in the current run of annual general meetings. Investors’ more supportive stance coincides with a surge in energy…