[fixed]saveScene doesn't save startFrame and endFrame

[Virion]

<attributes>
<string name="Name" value="" />
<int name="Id" value="-1" />
<vector3d name="Position" value="0.000000, 0.000000, 0.000000" />
<vector3d name="Rotation" value="0.000000, 0.000000, 0.000000" />
<vector3d name="Scale" value="1.000000, 1.000000, 1.000000" />
<bool name="Visible" value="true" />
<enum name="AutomaticCulling" value="box" />
<int name="DebugDataVisible" value="0" />
<bool name="IsDebugObject" value="false" />
<string name="Mesh" value="mesh.b3d" />
<bool name="Looping" value="true" />
<bool name="ReadOnlyMaterials" value="false" />
<float name="FramesPerSecond" value="0.025000" />
</attributes>

there is <bool name="Looping" value="true" /> but Irrlicht doesn't save startFrame and endFrame of the mesh?

and also there is <float name="FramesPerSecond" value="0.025000" /> but I can't seem to find a function to return the current animation speed of the mesh.

I solved the first problem using user data serializer. i consider this as a bug so i post it here.