Will Mitt Romney flip-flop on climate change if he’s elected president? Some big donors are betting on it.Romney and his super PAC have taken millions from funders with strong green streaks — despite the fact that the former Massachusetts governor has run to the right in the primary, proclaiming doubts about global-warming science and trashing President Barack Obama’s greenhouse gas emissions policies.Julian Robertson, founder of the Tiger Management hedge fund, helped put cap-and-trade legislation on the map with $60 million in contributions over the past decade to the Environmental Defense Fund. Now, Robertson has given $1.25 million to Romney’s Restore...