RSS2 validity checks are not compliant with the RSS2.0 specification

[araines]

Having looked through the source, I found this within the RSS2.0 XSD being used:

      <xs:element name="item" type="RssItem" minOccurs="1" maxOccurs="unbounded">
         <!-- 
           HACK: According to the RSS 2.0 spec, it should strictly be possible to have zero item elements, 
                 but this makes the schema non-deterministic with regard to extensibility elements
                 so for the moment we undid bug-fix 10231 and set minOccurs=1 to work around this problem. 
         -->
      </xs:element>

The minOccurs=1 is causing some of my tests to fail when they should not.