[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/Gui/QGIViewSection.cpp

@@ -67,25 +67,26 @@ void QGIViewSection::draw()
 void QGIViewSection::drawSectionFace()
 {
     auto section( dynamic_cast<TechDraw::DrawViewSection *>(getViewObject()) );
-    if (!section)
+    if (!section) {
         return;
+    }
 
-    if (!section->hasGeometry())
+    if (!section->hasGeometry()) {
         return;
+    }
+
     Gui::ViewProvider* gvp = QGIView::getViewProvider(section);
     ViewProviderViewSection* sectionVp = dynamic_cast<ViewProviderViewSection*>(gvp);
     if (!sectionVp || !sectionVp->ShowCutSurface.getValue())
         return;
 
-    float lineWidth    = sectionVp->LineWidth.getValue();
-
     auto sectionFaces( section->getTDFaceGeometry() );
     if (sectionFaces.empty()) {
-        Base::Console().
-             Log("INFO - QGIViewSection::drawSectionFace - No sectionFaces available. Check Section plane.\n");
         return;
     }
 
+    float lineWidth    = sectionVp->LineWidth.getValue();
+
     std::vector<TechDraw::FacePtr>::iterator fit = sectionFaces.begin();
     int i = 0;
     for(; fit != sectionFaces.end(); fit++, i++) {