ARFF header task now has options to allow a default label to be specified for a nominal attribute. This allows labels to be partially user-specified for a given nominal attribute, with all unspecified ones getting assigned to the default label. One use case is to reduce the number of classes in a multi-class problem by collapsing some into the default label.

git-svn-id: https://svn.cms.waikato.ac.nz/svn/weka@10115 e0a1b77d-ad91-4216-81b1-defd5f83fa92
Fixed a bug where some CSV parsing options were not getting set in the Hadoop job config files.

git-svn-id: https://svn.cms.waikato.ac.nz/svn/weka@10116 e0a1b77d-ad91-4216-81b1-defd5f83fa92
Fixed a bug where some CSV parsing options were not getting set in the Hadoop job config files.

git-svn-id: https://svn.cms.waikato.ac.nz/svn/weka@10117 e0a1b77d-ad91-4216-81b1-defd5f83fa92