Intel Outlook May Portend PC Weakness  NEW YORK (Reuters) - Intel Corp's &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=INTC.O target=/stocks/quickinfo/fullquote"&gt;INTC.O&lt;/A&gt; sharp cut in its  revenue outlook dragged down shares of personal computer makers  on Friday, on fears that the chipmaker's problems could signal  weak PC markets, analysts said.