Belligerent Occupation — Judicial Functions of Occupant — Whether Tribunals of Occupant Foreign or Municipal Tribunals — Person Convicted of Criminal Offence by Tribunal of Occupant — Whether Courts of Formerly Occupied Country Competent to Determine Application for New Trial after Cessation of Occupation — Bonn Convention on the Settlement of Matters Arising Out of the War and the Occupation of Germany, 1955