Tweak LES exhaust FX and add smoke trails

For #112.

Author: Robin Chang

GameData/SDHI/Service Module System/FX/SDHI_LES_Thruster.mu

@@ -79,6 +79,62 @@ PART
 				speed = 0.0 0.5
 				speed = 1.0 1.2
 			}
+			PREFAB_PARTICLE
+			{
+				name = exhaustPort
+				prefabName = fx_smokeTrail_light
+				transformName = smokePointPort
+				emission = 0.0 0.0							
+				emission = 0.05 0.0							
+				emission = 0.075 0.25
+				emission = 1.0 1.25
+				speed = 0.0 0.25
+				speed = 1.0 1.0
+				localOffset = 0, 0, 1
+				localRotation = 1, 0, 0, -90
+			}
+			PREFAB_PARTICLE
+			{
+				name = exhaustStarboard
+				prefabName = fx_smokeTrail_light
+				transformName = smokePointStarboard
+				emission = 0.0 0.0							
+				emission = 0.05 0.0							
+				emission = 0.075 0.25
+				emission = 1.0 1.25
+				speed = 0.0 0.25
+				speed = 1.0 1.0
+				localOffset = 0, 0, 1
+				localRotation = 1, 0, 0, -90
+			}
+			PREFAB_PARTICLE
+			{
+				name = exhaustDorsal
+				prefabName = fx_smokeTrail_light
+				transformName = smokePointDorsal
+				emission = 0.0 0.0							
+				emission = 0.05 0.0							
+				emission = 0.075 0.25
+				emission = 1.0 1.25
+				speed = 0.0 0.25
+				speed = 1.0 1.0
+				localOffset = 0, 0, 1
+				localRotation = 1, 0, 0, -90
+			}
+			PREFAB_PARTICLE
+			{
+				name = exhaustVentral
+				prefabName = fx_smokeTrail_light
+				transformName = smokePointVentral
+				emission = 0.0 0.0							
+				emission = 0.05 0.0							
+				emission = 0.075 0.25
+				emission = 1.0 1.25
+				speed = 0.0 0.25
+				speed = 1.0 1.0
+				localOffset = 0, 0, 1
+				localRotation = 1, 0, 0, -90
+			}
 		}
 		
 		rcs_running