Drug Giant Eli Lilly and Co. says the claims are without merit, but plans to cover more than 18,000 claims over the antipsychotic drug, Zyprexa. Plaintiffs say the drug made them gain weight causing them to develop diabetes. Lilly will pay $500 million, less than the $700 million it had agreed to pay on 8,000 claims in 2005.Referring to an article in the New York Times,"Lilly's own published...