Now does a final dictionary pruning on finalizeAggregation().

git-svn-id: https://svn.cms.waikato.ac.nz/svn/weka@10967 e0a1b77d-ad91-4216-81b1-defd5f83fa92
Now does a final dictionary pruning on finalizeAggregation().

git-svn-id: https://svn.cms.waikato.ac.nz/svn/weka@10968 e0a1b77d-ad91-4216-81b1-defd5f83fa92