ABABIO AND OTHERS v.  MENSAH AND OTHERS (NO. 2) Courts—Supreme Court—Review—Jurisdiction—Circumstances under which Supreme Court may review its own judgment—Matters constituting exceptional circumstances—Chieftaincy Act, 1971 (Act 370), ss. 15 (1) and 28—Courts Act, 1971 (Act 372) s. 113 (1) (d)—Constitution, 1979, art. 180—Chieftaincy (Proceedings and Functions) (Traditional Councils) Regulations, 1972 (L.I. 798), reg. 2.