a) debug Camera Matrices. enable with _IRR_COMPILE_WITH_90_DEGREE_CAMERA.

- allow ICameraSceneNode to accept any values and correct in buildCameraLookAtMatrixLH with normalize_camera_direction.
 if disabled defaults to the current v1.9 normalize
b) add initial Rotation to MayaCamera Constructor default 0,0
c) switchToMayaCamera in Examples. Clones FPSCamera default disabled


git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@6366 dfc29bdd-3216-0410-991c-e03cc46cb475

examples/08.SpecialFX/main.cpp

@@ -291,6 +291,7 @@ int main()
 
 	// disable mouse cursor
 	device->getCursorControl()->setVisible(false);
+	switchToMayaCamera(device);
 
 	s32 lastFPS = -1;