QNode parent changes

- introduce QNode::setParent(QNode *)
- QNode created with explicit parent now invoke
  QNodePrivate::_q_addChild
- QNode::cleanup introduces, need to be added to the
  dtor of every QT3D_CLONABLE QNode subclass. Handles
  proper destruction.
- QNode::cleanup added to all classes that should have it.
- Updated unit tests of Nodes, Entity, Scene

Change-Id: Id2c2784122a78edaae5580fe5976d88be5a1921c
Task-number: QTBUG-45947
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/render/defaults/qskyboxentity.cpp b/src/render/defaults/qskyboxentity.cpp
index 457fa746a..a2a1e0eaf 100644
--- a/src/render/defaults/qskyboxentity.cpp
+++ b/src/render/defaults/qskyboxentity.cpp
@@ -212,6 +212,7 @@ QSkyboxEntity::QSkyboxEntity(QNode *parent)
 
 QSkyboxEntity::~QSkyboxEntity()
 {
+    QNode::cleanup();
 }
 
 /*!