message: Allow City Raider II and III for Gunpowder units
diff: <UnitCombatType>UNITCOMBAT_MELEE</UnitCombatType>
  <bUnitCombat>1</bUnitCombat>
  </UnitCombat>
  + <UnitCombat>
  + <UnitCombatType>UNITCOMBAT_GUN</UnitCombatType>
  + <bUnitCombat>1</bUnitCombat>
  + </UnitCombat>
  <UnitCombat>
  <UnitCombatType>UNITCOMBAT_SIEGE</UnitCombatType>
  <bUnitCombat>1</bUnitCombat>
  <UnitCombatType>UNITCOMBAT_MELEE</UnitCombatType>
  <bUnitCombat>1</bUnitCombat>
  </UnitCombat>
  + <UnitCombat>
  + <UnitCombatType>UNITCOMBAT_GUN</UnitCombatType>
  + <bUnitCombat>1</bUnitCombat>
  + </UnitCombat>
  <UnitCombat>
  <UnitCombatType>UNITCOMBAT_SIEGE</UnitCombatType>
  <bUnitCombat>1</bUnitCombat>
  