util.startup: Improve error message when failing to load config file The current error text always implied that the file is missing, but it could also be a permissions issue, or something else. Now it will handle those two cases, and show the error from the system otherwise.

module:log("error", "mod_pep_plus has been renamed to mod_pep, please update your config file. Auto-loading mod_pep...");
module:depends("pep");