Coke Cuts Earnings, Volume Targets  ATLANTA (Reuters) - Soft drink giant Coca-Cola Co. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=KO.N target=/stocks/quickinfo/fullquote"&gt;KO.N&lt;/A&gt;,  stung by a prolonged downturn in North America, Germany and  other major markets, on Thursday lowered its key long-term  earnings and sales targets.