Automatic merge of T1.5-rc2-82-g5a8a93652 and 13 pull requests

- Pull request #630 at 704731a: Sky Color Fix (Addresses Trello Roadmap Card #367 for More accurate sunrise and sunset)
- Pull request #652 at 918fdb1: Add button functions to Raildriver
- Pull request #677 at c1c417f: Correct double heading bug
- Pull request #706 at 265d33d: Extended door functionality
- Pull request #713 at 65741c7: https://blueprints.launchpad.net/or/+spec/cruise-control 
- Pull request #719 at fd9e47a: Upgraded to MonoGame 3.8.0 (+ small update for other libraries)
- Pull request #722 at fb9079e: Fix Windows Forms deprecations in ActivityEditor
- Pull request #731 at f1348a4: fix: Log first error during Viewer mark-sweep clean-up
- Pull request #732 at efbc397: Improvements for air brakes
- Pull request #733 at 72947b0: Fixed battery switch sound being repeted
- Pull request #734 at 8f8484c: Fixed battery switch timer not working properly
- Pull request #736 at a845085: Replaced truncated brake token table with lists
- Pull request #737 at 96d12f1: Fixed brake controller script not being loaded in timetable mode

Source/Orts.Simulation/Simulation/RollingStocks/MSTSLocomotive.cs

@@ -351,6 +351,7 @@ public float OdometerM
         public float TrainBrakePipeLeakPSIorInHgpS = 0.0f;    // Air leakage from train brake pipe - should normally be no more then 5psi/min - default off
         public float CompressorRestartPressurePSI = 110;
         public float CompressorChargingRateM3pS = 0.075f;
+        public bool CompressorIsMUControlled = false;
         public float MainResChargingRatePSIpS = 0.4f;
         public float EngineBrakeReleaseRatePSIpS = 12.5f;
         public float EngineBrakeApplyRatePSIpS = 12.5f;
@@ -983,6 +984,7 @@ public override void Parse(string lowercasetoken, STFReader stf)
                         CompressorIsMechanical = true;
                     }
                     break;
+                case "engine(ortscompressorismucontrolled": CompressorIsMUControlled = stf.ReadBoolBlock(false); break;
                 case "engine(trainpipeleakrate": TrainBrakePipeLeakPSIorInHgpS = stf.ReadFloatBlock(STFReader.UNITS.PressureRateDefaultPSIpS, null); break;
                 case "engine(vacuumbrakesvacuumpumpresistance": VacuumPumpResistanceN = stf.ReadFloatBlock(STFReader.UNITS.Force, null); break;
 
@@ -1171,6 +1173,7 @@ public override void Copy(MSTSWagon copy)
 
             CompressorIsMechanical = locoCopy.CompressorIsMechanical;
             CompressorRestartPressurePSI = locoCopy.CompressorRestartPressurePSI;
+            CompressorIsMUControlled = locoCopy.CompressorIsMUControlled;
             TrainBrakePipeLeakPSIorInHgpS = locoCopy.TrainBrakePipeLeakPSIorInHgpS;
             MaxMainResPressurePSI = locoCopy.MaxMainResPressurePSI;
             MainResPressurePSI = locoCopy.MaxMainResPressurePSI;
@@ -2661,9 +2664,20 @@ protected virtual void UpdateCompressor(float elapsedClockSeconds)
 
             // Turn compressor on and off
             if (MainResPressurePSI < CompressorRestartPressurePSI && LocomotivePowerSupply.AuxiliaryPowerSupplyState == PowerSupplyState.PowerOn && !CompressorIsOn)
+            {
                 SignalEvent(Event.CompressorOn);
+                foreach (var loco in Train.Cars.OfType<MSTSLocomotive>())
+                {
+                    if (loco.RemoteControlGroup == 0 && loco.LocomotivePowerSupply.AuxiliaryPowerSupplyOn && !loco.CompressorIsOn && loco.CompressorIsMUControlled)
+                    {
+                        loco.SignalEvent(Event.CompressorOn);
+                    }
+                }
+            }
             else if ((MainResPressurePSI >= MaxMainResPressurePSI || LocomotivePowerSupply.AuxiliaryPowerSupplyState != PowerSupplyState.PowerOn) && CompressorIsOn)
+            {
                 SignalEvent(Event.CompressorOff);
+            }
 
             if (CompressorIsOn)
                 MainResPressurePSI += elapsedClockSeconds * reservoirChargingRate;