Added the new event S_EVENT_REMOVE_UNIT to trigger the removal of units (from groups also) when a :Destroy(false) or :Destroy() is called for a UNIT object.

The units are then removed from each SET that is subscribed to a set of UNIT objects or GROUP objects! Also the DATABASE is correctly managing this new removal method.
This to prevent the DATABASE getting corrupted with dead units, which were removed with :Destroy(), but which weren't cleaned from the database.

Moose Development/Moose/Wrapper/Positionable.lua

@@ -69,6 +69,38 @@ function POSITIONABLE:New( PositionableName )
   return self
 end
 
+--- Destroys the POSITIONABLE.
+-- @param #POSITIONABLE self
+-- @param #boolean GenerateEvent (Optional) true if you want to generate a crash or dead event for the unit.
+-- @return #nil The DCS Unit is not existing or alive.  
+function POSITIONABLE:Destroy( GenerateEvent )
+  self:F2( self.ObjectName )
+
+  local DCSObject = self:GetDCSObject()
+  
+  if DCSObject then
+  
+    local UnitGroup = self:GetGroup()
+    local UnitGroupName = UnitGroup:GetName()
+    self:F( { UnitGroupName = UnitGroupName } )
+    
+    if GenerateEvent and GenerateEvent == true then
+      if self:IsAir() then
+        self:CreateEventCrash( timer.getTime(), DCSObject )
+      else
+        self:CreateEventDead( timer.getTime(), DCSObject )
+      end
+    else
+      self:CreateEventRemoveUnit( timer.getTime(), DCSObject )
+    end
+    
+    USERFLAG:New( UnitGroupName ):Set( 100 )
+    DCSObject:destroy()
+  end
+
+  return nil
+end
+
 --- Returns the @{DCS#Position3} position vectors indicating the point and direction vectors in 3D of the POSITIONABLE within the mission.
 -- @param Wrapper.Positionable#POSITIONABLE self
 -- @return DCS#Position The 3D position vectors of the POSITIONABLE.