Wall St. Set to Climb on Strong Earnings  NEW YORK (Reuters) - U.S. stock futures rose on Tuesday,  pointing to a higher market open, on retreating oil prices and  stronger-than-expected earnings from technology bellwethers  International Business Machines Corp. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=IBM.N target=/stocks/quickinfo/fullquote"&gt;IBM.N&lt;/A&gt; and Texas  Instruments Inc. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=TXN.N target=/stocks/quickinfo/fullquote"&gt;TXN.N&lt;/A&gt;