Now implements ThreadSafe

git-svn-id: https://svn.cms.waikato.ac.nz/svn/weka/trunk@9883 e0a1b77d-ad91-4216-81b1-defd5f83fa92
Fixed date format string

git-svn-id: https://svn.cms.waikato.ac.nz/svn/weka/trunk@9885 e0a1b77d-ad91-4216-81b1-defd5f83fa92
Updated for changes to CFS

git-svn-id: https://svn.cms.waikato.ac.nz/svn/weka/trunk@9886 e0a1b77d-ad91-4216-81b1-defd5f83fa92
Merge remote-tracking branch 'upstream'