Work done

• Make GiveOrder functions accept nil/none for params and options arguments.
• Affected functions:
  • GiveOrderToUnit
  • GiveOrderToUnitMap
  • GiveOrderToUnitArray
  • GiveOrderArrayToUnit
  • GiveOrderArrayToUnitMap
  • GiveOrderArrayToUnitArray

Related issues

• fixes Let the Spring.GiveOrder callout family accept nil params/opts #1821

Remarks

• This allows skipping the arguments altogether on the calls, like: Spring.GiveOrderToUnit(unitID, CMD.STOP)
• Also allows setting an empty params without passing an empty table, previously it wasn't possible.
  • Spring.GiveOrderToUnit(unitID, CMD.SELFD, nil, {"shift"})
  • Ppl sometimes passing 0 there to avoid a table, but it's incorrect since it adds a param with value 0.

How to test

• Get bar branch https://github.com/saurtron/Beyond-All-Reason/tree/nil-params-or-opts
  • Has some calls modified to set params or opts to nil (or none).
• Start skirmish in neverend mode
• Place commander
• /runtests selfd