Internal function used to reconstruct a ClusteringConfig object from a named
list, such as the result of parsing a JSON config conforming to the
schema.rtemis.org clustering schema. The list must carry an algorithm
element; the remaining elements, its siblings, are passed to that
algorithm's setup_* function.
.list_to_ClusteringConfig(x)A ClusteringConfig object (an algorithm-specific subclass).
Named list with an algorithm element plus algorithm-specific
parameters as its siblings, e.g. list(algorithm = "DBSCAN", eps = 0.5).
EDG