Updated DocBook5 configuration from V5.0b3 to V5.0b4. This configuration allows to create and edit DocBook V5.0b4 documents conforming to the RELAX NG schema, currently under development, coming from DocBook.org (http://www.docbook.org/xml/5.0b4/).
Persons interested may use "Options|Install Add-ons" to install or upgrade this configuration.
