message: Peace vassals cannot have empire names
diff: @@ -874,6 +874,8 @@ def getMaster(iPlayer):
  return utils.getMaster(iPlayer)
  def isEmpire(iPlayer):
  + if isVassal(iPlayer): return False
  +
  return gc.getPlayer(iPlayer).getNumCities() >= getEmpireThreshold(iPlayer)
  def getEmpireThreshold(iPlayer):
  