IDE: Better xmlclass behavior with simple XML element having no attibutes (simple TAGs).
xsd:choice can sometime lead to such situation when there is no additional data associated to a particular choice.
<xsd:element name="Xenomai">
<xsd:complexType>
%(toolchain_gcc)s
<xsd:attribute name="XenoConfig" type="xsd:string" use="optional" default="xeno-config"/>
</xsd:complexType>
</xsd:element>