Runtime: add GetVersions() call to PLCObject, use it in web settings and expose it in WAMP and Pyro.
Note: WAMP changes are untested
<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>