By Michael Flaherty (Reuters) - Bankers are seeing more evidence that activist investor tactics launched in the United States several years ago are making their way abroad. So far this year, international activist campaigns are up 30 percent, Robin Rankin, co-head of global mergers and acquisitions at Credit Suisse Group said on Tuesday. "We're going to see some traditional activism all over the world," she said, citing countries in Europe and Asia as examples. Last year, activist hedge funds began launching campaigns abroad to shake up management teams, prompt or interrupt mergers and generally get companies to improve financial returns,...