Coca-Cola Cuts Long-Term Earnings 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 and other  markets, announced on Thursday that it was lowering key   long-term earnings and sales targets.