CIT, a lender to thousands of small businesses, files for bankruptcyTHE most gut-wrenching failures may be over, but the financial crisis continues to claim the occasional big victim. CIT, a lender to small and medium-sized businesses, from clothing retailers to Dunkin Donuts franchisees, filed for bankruptcy on Sunday November 1st after failing to garner enough support for a debt-restructuring plan. With $71 billion in assets, the century-old firm is only one-ninth the size of Lehman Brothers,