This removes auto-registration, committed by Martin r30961.
Realize this is a contentious topic but Brecht and myself both would rather opt-in registration.
TODO:
- addons need updating.
- class list will be modified to use weakrefs (should have been done for existing system too).
- will move bpy.types.(un)register functions into bpy.utils.(un)register_class, currently including these functions in a type list is internally ugly, scripts which loop over types also need to check for these.
changed some rna names to be more consistant
- use_texture -> use_image, since it sets if 'image' is used.
- use_map_color_diff -> use_map_color_diffuse since diffuse is used elsewhere in the same type.