[plugins] director: cache key default computation fix
[base] Base64: fixes base64 decoding
[tests] added test for Base64
[plugins] auth: adds support for PAM authetication

With this changeset you can have a section like:

handler main {
    auth.realm "secure area"
    auth.pam "web"
    auth.require

    docroot '/var/www'
    staticfile
}

You will need to add a service "web" to your /etc/pam.d/ directory
or choose an existing appropriate one.
some code documentation