Battered by conservative allies who believe he's broken faith with them, Gov. Arnold Schwarzenegger Friday replaced Cabinet Secretary Terry Tamminen, a Democrat and well-known environmental activist whose appointment two years ago was trumpeted as a show of the Republican governor's bipartisanship. Tamminen, who headed the Santa Monica-based Environment Now foundation when he became one of the governor's first major appointments in November 2003, will hold an advisory job as special assistant to the governor for energy and environmental technologies, Schwarzenegger's office announced late Friday. Fred Aguiar, who now runs the State and Consumer Services Agency, will replace Tamminen as Cabinet...