The -O option now actually works - this was not implemented before :-) Furthermore, the Reader/Writer for IO of cluster center files are now closed properly after use and marked as transient (thus fixing not serializable exceptions)

git-svn-id: https://svn.cms.waikato.ac.nz/svn/weka/trunk@9985 e0a1b77d-ad91-4216-81b1-defd5f83fa92
Merge remote-tracking branch 'upstream'