(Reuters) - Occidental Petroleum Corp shareholders on Friday elected all 11 directors, approved the issue of new shares and warrants and a poison-pill measure, the first shareholder votes on last year's $38-billion acquisition of Anadarko Petroleum. Directors elected include three associates of activist investor Carl Icahn, who opposed the Anadarko deal. Shareholders also authorized share warrants awarded to Berkshire Hathaway Inc under a financing deal. The company did not disclose vote..