CVS Same-Store Sales Up 5.4 Percent  NEW YORK (Reuters) - Drugstore chain CVS Corp. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=CVS.N target=/stocks/quickinfo/fullquote"&gt;CVS.N&lt;/A&gt; on  Tuesday said October sales at stores open at least a year rose  5.4 percent on higher demand for prescriptions and other  merchandise at its CVS stores.