Intel Doubles Dividend, Expands Buyback  SAN FRANCISCO (Reuters) - Intel Corp. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=INTC.O target=/stocks/quickinfo/fullquote"&gt;INTC.O&lt;/A&gt;, the world's  largest maker of computer chips, said on Wednesday it would  double its quarterly dividend to 8 cents a share, the second  time this year it has doubled its cash payout.