Rayovac Nears Deal for United Industries  NEW YORK (Reuters) - Battery maker Rayovac Corp. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=ROV.N target=/stocks/quickinfo/fullquote"&gt;ROV.N&lt;/A&gt; is  close to a deal to acquire privately held United Industries  Corp., a maker of lawn and garden products, for about \$476  million in cash and stock in a bid to diversify its product  mix, sources close to the situation said on Monday.