make AbstractWidgetDefinitionBuilder#setValidators/setCreateListeners/setCommonProperties protected
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                 Key: COCOON-1919
                 URL: http://issues.apache.org/jira/browse/COCOON-1919
             Project: Cocoon
          Issue Type: Wish
          Components: Blocks: Forms
    Affects Versions: 2.1.8, 2.1.9, 2.2-dev (Current SVN), 2.1.10-dev (current SVN)
            Reporter: Guillaume Déflache


In class AbstractWidgetDefinitionBuilder, it would be very handy (for customisation purposes) if the 3 methods "setValidators", "setCreateListeners", and "setCommonProperties" were protected instead of private, like "setDisplayData" already is.

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