Include documentation for Enterprise Architect XMI

[borsna]

Documentation for objects and properties are now included in the XMI-extension.
This would be good to include in the xsd-output.

<xmi:Extension extender="Enterprise Architect" extenderID="6.5">
  <elements>
    <element ...>
      <model package="packagename" ...>
      <properties documentation="this is the object documentation" .../>
      ....
     <attributes>
        <attribute ...>
           <documentation value="this is the property documentation" />
           ...
        </attribute>
     </attributes>
      ...
    </element>
  </elements>
...
</xmi:Extension>

[borsna]

implemented and running on lion

[borsna]

sorry, i think this was the lion repo..