Intel Cuts Revenue Outlook; Stock Falls  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; on Thursday  cut its third-quarter revenue and profit margin forecast after  demand for both its computer microprocessors and communications  chips weakened beyond expectations. Its stock fell nearly 8  percent.