[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/DrawViewClip.cpp

@@ -119,6 +119,7 @@ App::DocumentObjectExecReturn *DrawViewClip::execute()
     }
 
     requestPaint();
+    overrideKeepUpdated(false);
     return DrawView::execute();
 }