By Dan Weil Meanwhile, Morningstar lists four tech stocks it sees as good buys after the recent carnage. You can add venture-capital star Bill Gurley, a general partner at Benchmark, to the list of those who think technology companies are overvalued. “An entire generation of entrepreneurs & tech investors built their entire perspectives on valuations during the second half of a 13-year amazing bull run,” he tweeted. “The ‘unlearning’ process could be painful, surprising and & unsettling to many. I anticipate denial.” Recent declines by technology companies haven’t suddenly made them a bargain,…