BGE PyAPI

- renamed generic attribute "isValid" to "invalid" since BL_Shader already uses isValid.
- Moved deprecation warnings from CValue 
- removed unused KX_Scene::SetProjectionMatrix and KX_Scene::GetViewMatrix
- Added KX_Scene attributes "lights", "cameras", "objects_inactive", to allow access to objects in unseen layers (before the AddObject actuator adds them)
- KX_Camera deprecated cam.enableViewport(bool) for cam.isViewport which can be read as well.

source/gameengine/Expressions/PyObjectPlus.h

@@ -446,7 +446,7 @@ public:
 	KX_PYMETHOD_O(PyObjectPlus,isA);
 	
 	/* Kindof dumb, always returns True, the false case is checked for, before this function gets accessed */
-	static PyObject*	pyattr_get_is_valid(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef);
+	static PyObject*	pyattr_get_invalid(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef);
 	
 	static PyObject *GetProxy_Ext(PyObjectPlus *self, PyTypeObject *tp);
 	static PyObject *NewProxy_Ext(PyObjectPlus *self, PyTypeObject *tp, bool py_owns);
@@ -458,6 +458,14 @@ public:
 	 */
 	virtual void ProcessReplica();
 	
+	
+	static bool			m_ignore_deprecation_warnings;
+	
+	/** enable/disable display of deprecation warnings */
+	static void			SetDeprecationWarnings(bool ignoreDeprecationWarnings);
+ 	/** Shows a deprecation warning */
+	static void			ShowDeprecationWarning(const char* method,const char* prop);
+	
 };
 
 PyObject *py_getattr_dict(PyObject *pydict, PyObject *tp_dict);