Fix RequestUpdateInventoryItem so that asset changes
generate a new asset, which is needed for editing
appearance to do the right thing. Persistant appearance
seems to work after this, except you need to rebake textures
some times.
* Each module directory is currently inside one of the following category folders: Agent (Anything relating to do with Client<->Server communications.), Avatar (Anything to do with the avatar or presence inworld), Framework (Classes modules can use), Grid (Grid traffic, new OGS2 grid comms), Scripting (Scripting functions, etc), World (The enrivonment/scene, IE Sun/Tree modules.)
* This should be moved into a seperate project file.