added support for dependency widgets (i.e : a widget can now depend on another,
and the latter will be instantiated and available to the former).
<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
<name>metadataplayer</name>
<comment></comment>
<projects>
</projects>
<buildSpec>
</buildSpec>
<natures>
</natures>
</projectDescription>