Cluster Centroid improperly reported when no points associated w/ the cluster
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                 Key: MAHOUT-141
                 URL: https://issues.apache.org/jira/browse/MAHOUT-141
             Project: Mahout
          Issue Type: Bug
          Components: Clustering
            Reporter: Grant Ingersoll
            Assignee: Grant Ingersoll


Per the discussion at 
http://www.lucidimagination.com/search/document/5d54bb4822354bee/kmeans_help#48571ce2f5014a1f,
 the Cluster class returns pointTotal as the centroid (center) of a Cluster 
with zero points, which is not correct.  It should return the Center as the 
centroid in this case.

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