[TD]code clean ups

- QtConcurrent include and CMake for Win

- include clean up dvp, dvs, dvd

- variable names and nested if clean up

- remove debug code

src/Mod/TechDraw/App/DrawLeaderLine.cpp

@@ -142,7 +142,8 @@ App::DocumentObjectExecReturn *DrawLeaderLine::execute()
     if (!keepUpdated()) {
         return App::DocumentObject::StdReturn;
     }
-    adjustLastSegment();
+    adjustLastSegment();
+    overrideKeepUpdated(false);
     return DrawView::execute();
 }