QMLWidget05:
Added QQuickItem::itemchange(...) method call at the end of the re-implemented function.
reference URL:https://qt-project.org/doc/qt-5.1/qtquick/qquickitem.html#itemChange

deleted qmlwidget05_02. OpenGL Under QML sample should be referenced.
reference URL:http://qt-project.org/doc/qt-5.0/qtquick/scenegraph-openglunderqml.html
https://bugreports.qt-project.org/browse/QTBUG-30191
http://qt.gitorious.org/qt/qtdeclarative/commit/bb803baa360f24f9a01e1cb1652962476724dd2d
Merge branch 'master' of https://github.com/nobo66/Study