Allow actors to exist in multiple building queues.
Allow production ownership test to be disabled.
Fix production tooltip display.
Allow custom prerequisites to be restricted by race.
Tidy transformation trait/activity.
Pass initial race to husks and transformed actors.
Tidy production traits.
Fix remaining tech tree issues.
Remove some long-dead code.
Allow ProductionQueue to filter by race.
Use Prerequisites: ~disabled for unbuildable actors.
Add HackyAI support for multiple structure queues.
Fix captured tech unlocking in TD.
Introduce Order.SuppressVisualFeedback to cleanly disable flashes.
Use ExtraData for SetStance and SetUnitStance.
Avoid repeated queries of DeveloperMode.
Fix CanBuild not checking DeveloperMode.AllTech.
Propagate race to produced actors.
Refund the *old* player when a production structure is captured.
Merge pull request #5685 from pchote/race-restriction

Add capturable technology support. Fixes #2129