The market for mortgage mergers and acquisitions is beginning to heat up with talk about who’s in – and who might be out. According to investment banking officials speaking under the condition they not be identified, Caliber Home Loans and Flagstar Bancorp continue to make their intentions known as buyers. “Caliber is looking to make a big splash,” noted one advisor who said he’s been contacted by the privately held lender. “And they have money behind them too.” That “money” would be...