* Renamed 'Material' to PhysicsMaterial (Wood, Glass, Metal, etc.). May want to place in subclass with other physics specific properties. (We however need to support these features in ODE/etc first.)
* Renamed Faces to Materials. IObjectFace to IObjectMaterial - this is for clarity for those coming from a 3D Programming background (it also makes more sense if/when we support Meshes in core). Properties and members remain identical.
* Added XMLDoc comments to IObject to assist people writing MRMs in XMLDoc aware editors.
* Changes World.Objects from Array IObject[] to IObjectAccessor.
* Syntactically identical in most behaviour, however the indexer is now ranges not from 0..Count, but any valid internal LocalID. Additional indexers have been added for UUID.
* Example: for(int i=0;i<World.Objects.Count;i++) will not work any more, however foreach(World.Objects) will remain functional.
* This prevents us needing to create a list for each access to World.Objects which should [in theory] present a dramatic speed improvement to MRM scripts frequently accessing World.Objects.
