Updated for the changes to J48's API

git-svn-id: https://svn.cms.waikato.ac.nz/svn/weka/trunk@10120 e0a1b77d-ad91-4216-81b1-defd5f83fa92
Javadoc update.

git-svn-id: https://svn.cms.waikato.ac.nz/svn/weka/trunk@10121 e0a1b77d-ad91-4216-81b1-defd5f83fa92
Merge remote-tracking branch 'upstream'