According to http://dev.mysql.com/doc/refman/5.1/en/reserved-words.html, DATABASES is indeed a reserved word.
Regarding the conversion from 'wwh.databases' to 'wwh_database', this is the defined behavior. database related schema names (tables, colums) are sqlized by tersus, meaning that illegal characters in the context of a name (such as blank,'.' and some others) are converted to underscore.
Specifying a database/schema/catalog name is not done via the tableName property. Instead you'll need to define additional datasources in the confguration file and specify a dataSource property on the database record or via the optional <Data Source> trigger which you can add to the database plugins.
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