Python Runtime : stil untested optimization of Python Safe Globals.
Now only one python_poll block per python extension is used to trigger
execution of OnChange calls.
<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>