Issue - 196 - Proposal For Vote

Change the schema for tQuery and tExpression as specified below so new 
attributes can be added:

      <complexType name="tQuery" mixed="true">
          <sequence>
              <any minOccurs="0"/>
          </sequence>
          <attribute name="queryLanguage" type="anyURI"/>
          <anyAttribute namespace="##other" processContents="lax"/>
      </complexType>
      <complexType name="tExpression" mixed="true">
          <sequence>
              <any minOccurs="0"/>
          </sequence>
          <attribute name="expressionLanguage" type="anyURI"/>
          <anyAttribute namespace="##other" processContents="lax"/>
      </complexType>