LONDON (Reuters) - Former Barclays CEO John Varley was acquitted of fraud charges on Friday after senior judges said there was insufficient evidence against him in a case about Qatari cash injections that saved the bank from a state bailout in 2008.The case, pursued by Britain's Serious Fraud Office (SFO), was the first time the head of a global bank has faced criminal charges over conduct during the financial crisis, when the banking system was brought to its knees and taxpayers were forced to..