Adding support for python plugin wxglade_hmi allowing creation of PLC HMI using wxglade
Updating linux wxglade example according to this new plugin design
<xsd:element name="Rtai">
<xsd:complexType>
%(toolchain_gcc)s
<xsd:attribute name="rtai_config" type="xsd:string" use="optional" default="/usr/realtime/"/>
</xsd:complexType>
</xsd:element>