Empirically reverted calls done just after NewPLC back to the order as it was before chunked transfer. Apparently I broke something... To be continued
<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>