Merge pull request #519 from f3nix/qt5-warnings-1

Fix some Qt5 build warnings

src/Mod/Sketcher/Gui/TaskSketcherConstrains.cpp

@@ -320,7 +320,11 @@ protected:
     }
 
     void paint ( QPainter * painter, const QStyleOptionViewItem & option, const QModelIndex & index ) const {
+#if QT_VERSION >= 0x050000
+        QStyleOptionViewItem options = option;
+#else
         QStyleOptionViewItemV4 options = option;
+#endif
         initStyleOption(&options, index);
 
         options.widget->style()->drawControl(QStyle::CE_ItemViewItem, &options, painter);