[entropy.server] fix drained_dependencies_test() output when data is cached
[entropy.core] __setup_const: drop access() usage
[entropy.core] __setup_package_sets_vars: drop access() usage
[entropy.core] _hw_hash_parser: drop access() usage
[entropy.core] _system_parser: drop access() usage
[entropy.core] _repositories_parser: drop access() usage
[entropy.misc] EmailSender: drop access() usage
[entropy.const] introduce const_file_readable()
[entropy.core] use const_file_readable()
[entropy.fetchers] use const_file_readable(), drop access() usage
[entropy.const] const_file_readable: fix typo in docstring
[entropy.server.interfaces.db] use const_file_readable(), drop access() usage
[entropy.const] introduce const_dir_readable()
[entropy.server.interfaces.mirrors] drop access() usage
[entropy.spm] drop access() usage
[entropy.server] drop access() usage
[entropy.tools] drop access() usage
[entropy.security] drop access() usage
[entropy.dump] drop access() usage
[entropy.const] drop access() usage