MYFACES-3698: h:body onload and onunload attributes rendered twice if optimization enabled
 - Switch from HTML.BODY_ATTRIBUTES to HTML.BODY_ATTRIBUTES_WITHOUT_EVENTS

git-svn-id: https://svn.apache.org/repos/asf/myfaces/core/trunk@1449777 13f79535-47bb-0310-9956-ffa450edef68