(svn r23525) -Codechange: make Window::flags4 WindowFlags instead of uint16, with only values known in WindowFlags (and move out 2 timers to their own variable)

-Codechange: rename Window::flags4 to Window::flags
-Codechange: move some non-inline functions from .hpp to .cpp

src/widgets/dropdown.cpp

@@ -148,7 +148,7 @@ struct DropdownWindow : Window {
 		this->GetWidget<NWidgetStacked>(DDM_SHOW_SCROLL)->SetDisplayedPlane(scroll ? 0 : SZSP_NONE);
 
 		this->FinishInitNested(&_dropdown_desc, 0);
-		CLRBITS(this->flags4, WF_WHITE_BORDER_MASK);
+		CLRBITS(this->flags, WF_WHITE_BORDER);
 
 		/* Total length of list */
 		int list_height = 0;