- Use 'BKE_object_material_*', 'BKE_id_material_*' prefix
for functions that operate on Object and ID types.
- Use '_len' suffix for length (matching BLI naming).
- Use '_p' suffix for functions that return a pointer to values
where the value would typically be returned.
Functions renamed:
- BKE_object_material_resize was BKE_material_resize_object
- BKE_object_material_remap was BKE_material_remap_object
- BKE_object_material_remap_calc was BKE_material_remap_object_calc
- BKE_object_material_array_p was BKE_object_material_array
- BKE_object_material_len_p was BKE_object_material_num
- BKE_id_material_array_p was BKE_id_material_array
- BKE_id_material_len_p was BKE_id_material_num
- BKE_id_material_resize was BKE_material_resize_id
- BKE_id_material_append was BKE_material_append_id
- BKE_id_material_pop was BKE_material_pop_id
- BKE_id_material_clear was BKE_material_clear_id