The departure of business division president Kevin Johnson will lead to more changes at Microsoft. - By Daisuke Wakabayashi SEATTLE (Reuters) - Microsoft Corp (MSFT.O: Quote, Profile, Research, Stock Buzz) said on Wednesday that Kevin Johnson, who as president of Microsoft's largest business division spearheaded the company's pursuit of Yahoo Inc (YHOO.O: Quote, Profile, Research, Stock Buzz), i... ...