DESCRIPTION
An authentication provider for Dancer::Plugin::Auth::Extensible which authenticates Linux/Unix system accounts.Uses Unix::Passwd::File to read user details, and Authen::Simple::PAM to perform authentication via PAM.
The "get_user_details" call for this provider will return information from the "passwd" file - expect "gecos", "gid", "uid", "home", "shell", "uid".
Unix group membership is used as a reasonable facsimile for roles - this seems sensible.