Qt4/Qt5 neutral changes:

+ move meta types to own header to avoid double declaration

src/Mod/Part/Gui/DlgFilletEdges.cpp

@@ -76,8 +76,6 @@
 
 using namespace PartGui;
 
-Q_DECLARE_METATYPE(Base::Quantity)
-
 FilletRadiusDelegate::FilletRadiusDelegate(QObject *parent) : QItemDelegate(parent)
 {
 }

src/Mod/Sketcher/Gui/PropertyConstraintListItem.cpp

@@ -28,7 +28,7 @@
 
 #include <Base/Tools.h>
 
-#include <Gui/propertyeditor/PropertyItem.h>
+#include <Gui/MetaTypes.h>
 #include "../App/PropertyConstraintList.h"
 #include "PropertyConstraintListItem.h"
 
@@ -36,7 +36,7 @@
 using namespace SketcherGui;
 using namespace Gui::PropertyEditor;
 
-TYPESYSTEM_SOURCE(SketcherGui::PropertyConstraintListItem, Gui::PropertyEditor::PropertyItem);
+TYPESYSTEM_SOURCE(SketcherGui::PropertyConstraintListItem, Gui::PropertyEditor::PropertyItem)
 
 PropertyConstraintListItem::PropertyConstraintListItem()
 {