net/389-ds-base: Add new port
389 Directory Server is an enterprise-class LDAP directory server
designed to provide scalable and reliable directory services for
identity management, authentication, authorization, and centralized
account data.
It supports features such as replication, access control, schema
management, plugins, and administrative command-line utilities.
Required for development of the net/freeipa-server port.
Sponsored by: Netzkommune GmbH