By Gabriella Borter (Reuters) – The Oklahoma legislature on Thursday approved two bills that would ban virtually all abortions, and both Republican-composed laws would take effect immediately if the governor signs them as he has promised. Oklahoma would become the most restrictive U.S. state for abortions under the bill passed by the state Senate to ban them except in cases of medical emergency, rape or incest. Earlier, the state’s House of Representatives approved a separate piece of legislation to ban abortions after six weeks of pregnancy. The Senate also had previously approved that measur…