* Proper shutdown of mouse on exit

* Moved DevIL.dll inside external/devil folder

.vs/ProjectSettings.json

@@ -1,3 +0,0 @@
-{
-  "CurrentProjectSetting": "x86-Debug"
-}

.vs/VSWorkspaceState.json

@@ -1,8 +0,0 @@
-{
-  "ExpandedNodes": [
-    "",
-    "\\REDALERT"
-  ],
-  "SelectedNode": "\\REDALERT\\INIT.CPP",
-  "PreviewInSolutionExplorer": false
-}

.vs/tasks.vs.json

@@ -1,10 +0,0 @@
-{
-  "version": "0.2.1",
-  "tasks": [
-    {
-      "taskLabel": "task-CMakeLists",
-      "appliesTo": "CMakeLists.txt",
-      "type": "launch"
-    }
-  ]
-}

code/REDALERT/WIN32LIB/MOUSEWW.CPP

@@ -236,7 +236,7 @@ void WWMouseClass::Hide_Mouse()
 }
 
 void WWMouseClass::RenderMouse(void) {
-	if (!isMouseVisible)
+	if( this == NULL || !isMouseVisible)
 		return;
 
 	//ImVec2 size(current_cursor->width, current_cursor->height);