beremiz

Attempt (disabled) to systematically attach a cobalt shadow thread to python threads.
When experimenting with pthread_cond, didn't see any enhancement.
<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>