By Chris Thomas, Sriram Mani and Aditya Kalra MUMBAI (Reuters) -Shares of India’s Adani Enterprises plunged on Friday after a scathing report by a U.S. short seller triggered a selloff in the conglomerate’s listed firms, casting doubts on the success of the company’s record $2.45 billion secondary share sale. Seven listed companies of the Adani conglomerate – controlled by one of the world’s richest men Gautam Adani – lost a combined $48 billion in market capitalisation, with U.S. bonds of Adani firms also falling after Hindenburg Research flagged concerns in a Jan. 24 report about debt levels…