It was a state commission that took six years and nine months and cost tens of millions of euro in legal fees to unravel what happened when IBRC, the former Anglo Irish Bank, sold the building services company Siteserv to the tycoon Denis O’Brien.  When the long-awaited 1,500-page report into the 2012 deal finally emerged, the IBRC Commission made some significant conclusions. It said the deal was “so tainted by impropriety” that it was “not commercially sound”. In its conclusions, the IBRC Commission recommended a number of times that the special liquidators to the bank should “take legal advice”. The…