revlog: skip opener options to pass compression_engine value We can directly set the option in the config object now.

revlog: skip opener options to pass max_chain_len We can directly set the option in the config object now.

revlog: skip opener options to pass max_deltachain_span We can directly set the option in the config object now.

revlog: skip opener options to pass lazy_delta values We can directly set the option in the config object now.

revlog: skip opener options to pass debug_delta value We can directly set the option in the config object now.

revlog: skip opener options to pass candidate_group_chunk_size value We can directly set the option in the config object now.

revlog: skip opener option to pass delta_both_parents value We can directly set the option in the config object now.

revlog: skip opener option to pass chunk_cache_size value We can directly set the option in the config object now.

revlog: create the revlog object at the repository level There is currently no value set in it, but we will be able to start centralise config parsing at the repository level.

revlog: overwrite revlog config through copy of the config object The new objects allow for this kind of blanket approach that make things cleaner. If we have more cases, it would probably deserve a context manager, but since we only have two usage, I don't think it is worth it.