FlightGear - Flight Simulator FGAddon

- Control: RCWS response improved
- Control: Add more realistic LSAS and AP auto trimming
- VC: Add new analog standby instruments (optional)
- VC: Add smooth animations to the start switches
- Sim: AP aural now plays when power is applied (except panel states)
- Sim: Address an issue affecting startup in certain situations
- DU: Address an issue where some PFD elements did not appear when they should
- DU: Address an issue where the slip skid indicator might exceed the bounds