UPDATE 2-Opponents of Dell buyout say don't delay vote

By Greg Roumeliotis and Ross Kerber July 17 (Reuters) - Opposition to Michael Dell's bid to take his computer company private grew on Wednesday, and billionaire Carl Icahn argued Dell Inc had no right to delay a shareholder vote, even if the deal looked more likely to fail. Holders of nearly 30 percent of Dell stock oppose the $24.4 billion offer by founder Dell and private equity firm Silver Lake, which is now scheduled for a vote in Austin, Texas on Thursday morning. That includes shar