Sears Up 5 Pct on Real Estate Enthusiasm  CHICAGO (Reuters) - Sears, Roebuck and Co. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=S.N target=/stocks/quickinfo/fullquote"&gt;S.N&lt;/A&gt; shares  rose 5 percent on Thursday on continued investor enthusiasm  over the value of the retailer's property after last week's  disclosure that a real estate investment trust has more than a  4 percent stake in the firm.