The auth_ldap module authenticates HTTP basic credentials against an LDAP
directory.  An ldap_server block describes one directory, require rules say
who is let in -- any account that binds, one named account, or membership
in a group -- and every worker keeps a pool of connections to the directory
and can remember the outcome of a bind for a while.

This port only installs the module sources.  The module itself is built by
the nginx ports when their HTTP_AUTH_LDAP option is enabled.
