[cddlm] Paragraph on CDL

[Jun Tatemura]

The CDDLM Configuration Desrciption Language (CDL) is an XML-based 
language for declarative
description of system configuration that consists of components 
(deployment objects) defined
in the CDDLM Component Model. The Deployment API uses a deployment 
descriptor in CDL
in order to manage deployment lifecycle of systems.  The language 
provides ways to describe properties
(names, values, and types) of components including value references so 
that data can be assigned
dynamically with preserving specified data dependencies. A system is 
described as a hierachical
structure of components. The language also provides prototype-based 
template functionality (i.e.,
prototype references) so that the user can describe a system by refering 
to component descriptions
given by component providers.