UPBGE: Cleanup SG_Controller and subclasses.

This commits add an empty SetOption function in SG_Controller to avoid redefinition
in subclasses, also the attributes m_modified and m_ipotime which are used in all
controller classes are moved into the base class SG_Controller, in consideration
the function SetSimulationTime is de-virtualized and moved into SG_Controller.

source/gameengine/Ketsji/KX_CameraIpoSGController.cpp

@@ -114,13 +114,4 @@ KX_CameraIpoSGController::~KX_CameraIpoSGController()
 		delete (*i);
 	}
 
-}
-
-	void
-KX_CameraIpoSGController::SetOption(
-	int option,
-	int value) 
-{
-	/* Setting options */
-
 }

source/gameengine/Ketsji/KX_CameraIpoSGController.h

@@ -51,28 +51,18 @@ class KX_CameraIpoSGController : public SG_Controller
 	unsigned short  	m_modify_lens 	 : 1;
 	unsigned short	    m_modify_clipstart       : 1;
 	unsigned short		m_modify_clipend    	 : 1;
-	bool				m_modified;
 
-	double		        m_ipotime;
 public:
 	KX_CameraIpoSGController() : 
 				m_modify_lens(false),
 				m_modify_clipstart(false),
-				m_modify_clipend(false),
-				m_modified(true),
-				m_ipotime(0.0)
+				m_modify_clipend(false)
 		{}
 
 	~KX_CameraIpoSGController();
 	SG_Controller*	GetReplica(class SG_Node* destnode);
 	bool Update(double time);
 
-		void
-	SetOption(
-		int option,
-		int value
-	);
-
 	void SetSimulatedTime(double time) {
 		m_ipotime = time;
 		m_modified = true;